Updated August 2026. This guide covers the real differences between jails and prisons, how each one actually operates day to day, why America runs two separate systems when most countries do not, how California built and runs both, what people who have lived in both say, and the one county in California that has neither.
Quick answer: A jail is a local, short-term facility, usually run by a county sheriff, that holds people who were just arrested, people awaiting trial, and people serving sentences of about a year or less. A prison is a state or federal facility that holds people convicted of felonies and sentenced to longer terms. In California, jails are run by sheriffs in each county and prisons are run by the state’s corrections department, CDCR. The difference matters most at one moment: bail exists in jail, before conviction. Nobody bails out of prison.
Jail vs. Prison at a Glance
| County Jail | State Prison |
|---|
| Run by | County sheriff (local) | State corrections department (CDCR in California) or the federal Bureau of Prisons |
| Who is held | People awaiting trial, plus shorter sentences | People convicted and sentenced, usually to more than a year |
| Convicted? | Mostly not: 69% of U.S. jail inmates are unconvicted, and over 79% in California are unsentenced | Yes, everyone is sentenced |
| Typical stay | Days to months; the average U.S. jail stay is measured in weeks | Years to decades |
| Does bail apply? | Yes, for most people held before trial | No, outside rare appeal bonds |
| Court | Arraignment and trial happen from jail custody | Court is over, apart from appeals |
| Turnover | Extreme: 7.9 million U.S. jail admissions in a year | Low: about 472,000 U.S. prison admissions in a year |
| Programs | Thin; short stays and churn make programming hard | Education, vocational training, jobs, treatment |
| Visits | Often short, behind glass, or by video; varies by county | Scheduled contact visits; California prisons also allow overnight family visits |
| Phone calls | Rules and costs vary by county | Free in California prisons since 2023 |
| In California | About 120 facilities across 56 of 58 counties, roughly 60,300 people | 31 prisons holding about 89,000 people, dropping to 30 prisons by fall 2026 |
| Oversight | Board of State and Community Corrections inspects; sheriffs run day to day | CDCR, with medical care under a federal Receiver since 2006 |
Sources for the table: Bureau of Justice Statistics, BJS jail data, BJS prison data, PPIC, CDCR.
One statistic explains more about the difference than any definition. American jails hold about 657,500 people on a given day but process 7.9 million admissions a year; prisons hold nearly twice as many people, about 1.25 million, on one seventeenth as many admissions. As Michael O’Toole, the longtime jails chief at the National Institute of Corrections, put it in a comparison compiled by law professor Margo Schlanger, it takes about two years for the prison population to turn over once, while the jail population turns over many times each year: 20 to 25 times on the 1990s numbers he used, and about twelve times on today’s. A jail is a revolving door attached to a courthouse. A prison is a place where people live.
That is the short version. Everything below goes deeper.
Table of Contents
- What is a jail?
- What is a prison?
- How a jail operates, day to day
- How a prison operates, day to day
- Why jails and prisons run so differently
- Which one is worse? Ask the people who lived in both
- Why do jails and prisons both exist?
- Most countries don’t have both
- Two histories, side by side: how California built each system
- How California runs both systems as one pipeline
- How the major counties run their jails
- The benefits and costs of running both
- The county with no jail, and the states with no jails at all
- Is there a state that runs both better than California?
- What the difference means for your family
- How to stay out of both
- Frequently asked questions
What Is a Jail?
A jail is a confinement facility “generally operated under the authority of a sheriff, police chief, or county or city administrator” that houses people “before and after arraignment… and those sentenced to incarceration of 1 year or less,” in the Bureau of Justice Statistics’ definition. There are about 2,850 jail jurisdictions in the United States, nearly all local.
In California, the jail is the sheriff’s by law: Government Code section 26605 makes the sheriff “the sole and exclusive authority to keep the county jail and the prisoners in it”. Fifty-six of the state’s 58 counties operate about 120 jail facilities with more than 82,000 beds, holding roughly 60,300 people as of June 2025, and more than 79 percent of them have not been sentenced for the charge they are held on. The state’s Board of State and Community Corrections sets standards and inspects, but the sheriff runs the building.
Jail is where everything a family can act on happens. Booking happens at jail. Arraignment happens from jail custody, where a judge sets, reduces, or denies bail. Release before trial, whether by bail bond, own recognizance, or a judge’s order after a bail hearing, happens from jail. It is also, facility for facility, the more chaotic system: California jails set a record with 215 deaths in 2022 even as their populations shrank, which is why we rank and document the worst county jails in California separately.
What Is a Prison?
A prison holds people “confined in long-term facilities run by the state or federal government,” in the Bureau of Justice Statistics’ definition, typically felons sentenced to more than a year. Prisons belong to exactly 51 governments: the 50 states and the federal Bureau of Prisons. California’s system, run by the Department of Corrections and Rehabilitation, operates 31 prisons holding about 89,000 people at roughly 119 percent of design capacity, a number shrinking toward 30 prisons when the California Rehabilitation Center closes in fall 2026.
Everyone in prison has been sentenced, and the system is built around that permanence. New arrivals spend up to 90 days in a reception center being scored and classified into one of four security levels, from Level I open dormitories to Level IV cellblocks with armed coverage. After that come the things jails mostly cannot offer: education and vocational programs, prison jobs, structured yards, scheduled contact visiting and even overnight family visits, and, since 2023, free phone calls. None of that makes prison gentle; California’s prison system has spent two decades under a federal Receiver for medical care and we document its worst facilities in our ranking of the worst state prisons in California. But it is a fundamentally different kind of place than a jail, built for years instead of weeks.
Two systems people often confuse with these: federal facilities in California, like USP Atwater or the Metropolitan Detention Center in Los Angeles, belong to the federal Bureau of Prisons and hold people in federal cases; immigration detention is civil confinement, legally neither jail nor prison, though ICE rents space in some county jails.
How a Jail Operates, Day to Day
A jail’s defining activity is intake. San Diego’s system books around 100,000 people a year; San Bernardino’s books about 85,000. Every one of those bookings means a search, a medical and mental health screening, property storage, classification, a housing decision, and often detox monitoring, because people arrive straight from the street in whatever condition the street left them. That churn shapes everything else about the building.
Staffing is law enforcement, not corrections as a profession. California jails are run by sheriffs and staffed largely by sworn deputies, and in Los Angeles the practice for decades was that new deputies started their careers working custody while waiting for patrol slots; the county’s own Citizens’ Commission on Jail Violence found custody was treated as “lost time” on the way to a real assignment, a culture it blamed for excessive force in the jails. LASD has since built a dual-track career path so deputies can make custody a career, and more than 30 counties now field custody-only correctional deputies.
Daily life runs on rotation and minimums. State standards entitle jail prisoners to as little as ten hours out of cell per week, including three hours of exercise, and two visits totaling one hour weekly; pods take turns at dayrooms, phones, and yards, and a crisis collapses the schedule fast, as when overcrowding and assaults drove San Francisco’s jails to lockdowns of one hour out of cells per day in 2024. Health care is usually a county contract: San Diego hired NaphCare, Alameda uses Wellpath, a company that entered bankruptcy in late 2024 facing roughly 1,500 lawsuits, while Los Angeles runs its own correctional health department and a mass addiction-treatment operation, with 2,350 to 2,650 people on medication treatment on any given day.
None of this is cheap. A Contra Costa County grand jury priced that county’s jail system at $396 per person per day in 2025, about $144,635 a year, which means a bed in that county jail now costs more than a bed in state prison.
How a Prison Operates, Day to Day
A prison’s defining activity is routine. Everyone inside has been sentenced, classified, and assigned, so the institution is built around schedule rather than intake. CDCR regulations require a physical count of every prisoner at least four times a day, at least one a standing count, and nothing is scheduled against the count. Between counts, the day is structured: every able-bodied prisoner is obligated to work or program, in prison jobs, education blocks, vocational shops, or treatment, and privileges like canteen draws, phone access, and visiting are tiered to behavior and assignment.
The staff are career corrections. CDCR officers train at the department’s 13-week academy in Galt and spend their careers inside institutions, and medical care is run not by a county contractor but by a state agency, CCHCS, under the federal Receiver, with a $4.1 billion budget and more than 18,000 positions. The far end of the prison spectrum barely resembles confinement at all: CDCR, CAL FIRE, and the Los Angeles County Fire Department jointly run 35 conservation camps where incarcerated fire crews logged 1.8 million emergency response hours in 2024, 42 percent of the state’s total, including more than a thousand people deployed to the January 2025 Los Angeles fires.
The price of all that structure is $127,800 per person per year: about $52,000 of it security, $42,000 health care, and under $5,000 rehabilitation programs.
Why Jails and Prisons Run So Differently
Put the two previous sections side by side and the differences stop looking like choices and start looking like physics. A jail cannot run a prison’s schedule because its population will not hold still: it turns over roughly a dozen times a year, while a prison’s turns over roughly once every two and a half to three years. A jail cannot program people the way a prison does because you cannot enroll someone in a vocational course who may bail out Thursday or take a plea Monday. And a jail absorbs the system’s most dangerous hours: people arrive in withdrawal, in psychiatric crisis, or on the worst day of their lives, which is why suicides and overdoses cluster in the first days after booking and why California’s record 215 jail deaths in 2022 happened in the system with the shorter stays. A prison receives people only after jail has absorbed that window: screened, sentenced, stabilized, and classified.
The structures underneath differ too. Jails answer to 58 elected sheriffs and county budgets, with a state standards board that mostly makes recommendations; prisons answer to one state agency with a dedicated budget, a court-appointed Receiver over its medical care, and an inspector general. Jails were built for short stays, more than 40 percent of them before 1980; prisons were built for decades-long ones. None of this excuses either system’s failures. It explains why the same person can describe them as different worlds.
Which One Is Worse? Ask the People Who Lived in Both
Here is the answer almost nobody expects: people who have served time in both routinely describe county jail as the harder place to be, even though prisons hold people convicted of the most serious crimes.
Christopher Blackwell had been in Washington state prisons for two decades when a resentencing hearing sent him back to a county jail for two weeks. “Jails are filled with people experiencing the worst days of their lives,” he wrote afterward, adding that he had considered attending his own hearing by video “simply to avoid the hazards inherent to jail.” His New York Times essay about it was titled “Two Decades of Prison Did Not Prepare Me for the Horrors of County Jail.”
The same verdict shows up wherever people with both experiences talk. “Once you get upstate, you can relax,” Robert Eaddy, who cycled through Rikers Island and New York’s prisons, told The Marshall Project. “Rikers, you’re just there, wasting time.” A Californian moved from a county jail to Wasco State Prison put it in writing during the pandemic: “prison is way better in terms of comfort and safety,” trading cold meals and two weekly five-minute calls for hot breakfasts and dinners, programs, and a schedule. And a man who spent months in LA’s Men’s Central Jail before years in state prison summarized the jail he knew in one line for the Vera Institute: “The county jail has always been a murder ground.”
The reasons are structural, not anecdotal. Jails mix everyone the street sends them, in the rawest hours of their cases, in buildings that turn their populations over roughly a dozen times a year; classification is rougher, days are emptier, and medical and mental health systems reset with every booking. It shows up in the death data: suicide is the leading cause of death in local jails, and the national jail suicide rate runs far above the prison rate. None of this romanticizes prison, where the stakes are years of a person’s life and the worst facilities have records as dark as any jail’s. But it explains a truth families discover constantly: the scariest stretch of a criminal case is usually the county jail stretch, which is also the stretch where release is actually possible.
Even the small comforts split along system lines. Cal Lewis spent a year visiting his family through jailhouse plexiglass; his first contact visit came only after he reached a federal prison. “I hugged her and didn’t want to let go,” he wrote.
Why Do Jails and Prisons Both Exist?
Nobody designed America’s two-system structure on purpose. Jails are simply centuries older, and prisons were invented later for a different job.
The county jail is medieval English machinery that survived into the present. In 1166, Henry II’s Assize of Clarendon ordered that “in the several counties where there are no jails, let them be made” so sheriffs could hold the accused until traveling judges arrived. That is a jail’s original job description, and it has barely changed in 860 years: hold people for the court. Colonial America inherited the model, and through most of the colonial era, confinement was mostly for people awaiting trial or sentencing; the punishments themselves were fines, the whipping post, or worse.
The prison is an American invention with a birthday. In 1790, Pennsylvania converted Philadelphia’s Walnut Street Jail into the country’s first state prison, built on a radical idea pushed by Benjamin Franklin’s circle of reformers: that imprisonment itself, with solitude and labor, could BE the punishment, replacing the gallows and the lash. The idea scaled fast. New York’s Auburn system of congregate work by day and solitary cells by night became the national template, Philadelphia answered with Eastern State Penitentiary’s total solitary regime in 1829, and within a generation every state was building penitentiaries for its sentenced felons.
That history is the answer to the why. When states invented imprisonment as punishment, they took the convicted, and counties kept the job they had held since the twelfth century: the accused and the short-term. Layer on American federalism, where sheriffs are elected constitutional officers (California’s constitution requires one per county) and felony punishment is a state responsibility, and you get the modern arrangement: roughly 2,850 local jail systems feeding 50 state prison systems and one federal one.
It did not have to be this way, and in six states it is not. Alaska, Connecticut, Delaware, Hawaii, Rhode Island, and Vermont run unified systems with no county jails at all; the state corrections department holds everyone from first booking to final release. More on what that looks like below.
Most Countries Don’t Have Both
Zoom out past the state line and the two-system split starts to look like an American peculiarity. Most countries run a single national corrections service, and the international word for the jail function is “remand”: people awaiting trial are remanded into the same system that holds the sentenced. A Justice Policy Institute comparison found that in Australia, Finland, and Germany, unconvicted detainees are held in prison-service facilities; England and Wales hold them in remand units inside the national prison estate. Nobody else pairs roughly 3,100 locally run jails with separate state prison systems the way the United States does.
Norway is the cleanest example, and the most relevant one for California. The Norwegian Correctional Service runs everything: 58 prisons, remand custody, and probation, one service, about 3,000 prisoners in a country of 5.6 million. Its own English-language site states it plainly: “Norway has no special prisons for those in pre-trial detention.” Its incarceration rate is 54 per 100,000 against America’s 608, its longest ordinary sentence is 21 years, its officers train for two years at a correctional university college against California’s 13 weeks, and its reported reoffending rates run around 20 to 30 percent, far below American rates. If that model sounds familiar, it should: Norway is the explicit blueprint for the California Model now being piloted at San Quentin. The import, so far, stops at the prison gate; nobody has tried running a county jail on the normality principle.
Even countries with a two-tier split draw the line differently. Canada splits custody at two years: sentences of two years or more go to federal penitentiaries, everything shorter plus all remand goes to provincial institutions. But Canada’s lower tier is 13 provincial and territorial correctional services, not thousands of county jails run by elected sheriffs.
One comparison puts the American arrangement in scale. Only three other countries on earth, China, Brazil, and India, have total prison populations larger than the roughly 457,000 people American local jails hold before trial. The entire prison system of England and Wales would fit inside America’s pretrial jail population five times over.
Two Histories, Side by Side: How California Built Each System
California’s jail and prison stories start two years apart, on two ships, in the same harbor.
The jail came first. In 1849, Gold Rush San Francisco bought the brig Euphemia for $3,500 and converted it into a floating jail, moored off Central Wharf to replace the flimsy log lockup the town had used since 1846. The state prison followed in 1851, when San Francisco’s sheriff outfitted another ship, the Waban, as California’s first state prison, anchoring roughly 40 prisoners off Angel Island. In 1852 the Waban’s prisoners were put ashore at Point San Quentin to build their own cells, and San Quentin became the state’s first landbound prison, still operating today as its oldest.
From there the two systems grew on different clocks. The prison system added Folsom in 1880, granite-walled and famously hard, then the reform-minded California Institution for Men in 1941, the first major minimum-security prison in the country. Then came the boom: between 1984 and 2005, California opened 21 new prisons, including the Pelican Bay supermax in 1989, as the prison population grew nearly eightfold to its 2006 peak above 173,000. The correction arrived through the courts: a federal judge seized prison medical care in 2005-2006 after finding a needless death every six to seven days, and the Supreme Court’s Brown v. Plata decision in 2011 capped the population at 137.5 percent of design capacity. Since then the story has been shrinkage and reinvention: four facilities closed or ended since 2021, a fifth closing in fall 2026, executions halted since 2019, and San Quentin itself renamed a Rehabilitation Center in 2023.
The jail system’s history is quieter and, in some ways, harder. Sheriffs have kept county jails since statehood in 1850, and the state did not even create a standards body until the Board of Corrections in 1944. Court oversight arrived here too: in 1978, a federal judge toured the Los Angeles jails unannounced, found conditions “constitutionally intolerable,” and ordered relief from overcrowding that the county is still litigating under today. But the event that transformed California jails was the 2011 Realignment law. Facing the Brown v. Plata cap, the state rerouted lower-level felony sentences into county jails under Penal Code 1170(h), including terms of 16 months, two years, three years, and longer. Buildings designed for stays measured in weeks, 40 percent of them built before 1980, became long-stay institutions almost overnight, backed by roughly $2.5 billion in state jail construction bonds across four programs. The strain shows in the numbers that followed: a record 215 jail deaths in 2022, new death-disclosure requirements under AB 2761, and a young state In-Custody Death Review Division still finding its feet.
The two histories rhyme: both systems overbuilt, both broke, both drew federal judges, and both are now being reformed under pressure. The difference is that the prison system’s reckoning came a decade earlier, which is part of why, today, the jail side is where the deadliest problems live.
How California Runs Both Systems as One Pipeline
On paper the two systems are separate governments. In practice they operate as one pipeline with a handoff in the middle, and knowing where the handoffs are explains most of what families experience.
It starts at the jail. After arrest, California law requires arraignment within 48 hours, excluding Sundays and holidays, so the jail sits next to the courthouse and runs the shuttle between them. Everything through trial happens from jail custody. At sentencing the road forks three ways: misdemeanors and realignment felonies stay in county jail, often as a split sentence of jail time plus mandatory supervision, which court rules now make the presumptive choice; serious and violent felonies go to state prison. For prison-bound cases the sheriff must deliver the person to state prison, and CDCR must accept them within five working days of notification, after which the state owes the county for every extra day.
The pipeline runs in reverse too, which is the part most people miss. Since realignment, people leaving prison on Post-Release Community Supervision report to a county agency, in every county the probation department, not state parole, and when anyone on either form of supervision violates, the consequence is served in county jail: flash incarceration of up to 10 days, or revocation terms capped at 180 days. California jails are not just the front door of the prison system anymore. They are its back door.
Money moves along the same pipe. Counties receive about $2 billion a year in realignment funding for the populations the state handed down, and analysis of county spending shows about three quarters of it goes to law enforcement agencies, with sheriffs taking the largest share. The state also financed the buildings: roughly $2.5 billion in jail construction bonds across four programs since 2007. And the arrangement is what saved the state in court: when the Supreme Court capped prison crowding, realignment cut the prison population by about 27,000 in a single year by holding the line at county jails, which is the main reason California’s prisons comply with Brown v. Plata today.
How the Major Counties Run Their Jails
Every county runs the same functions, but the scale varies by an order of magnitude, and the biggest systems are institutions in their own right. Our ranking of the worst county jails in California documents the failures; here is the operational shape.
Los Angeles runs the largest jail system in the country: about 13,000 people on an average 2025 day, more than half with cases not yet adjudicated, spread across facilities from Men’s Central Jail and Twin Towers downtown to the Pitchess ranches in Castaic, with about 27 percent of the entire sheriff’s department staffing devoted to custody. San Diego operates seven facilities holding more than 5,000 people on roughly 100,000 bookings a year. San Bernardino runs four jails with 7,400 beds and about 5,000 held, anchored by West Valley Detention Center. Orange houses up to 6,000 across four facilities, including the 3,442-bed Theo Lacy Facility. Riverside spreads about 3,700 people across five jails from Riverside to Blythe. Sacramento pairs a downtown Main Jail with a sentenced-work facility 27 miles south, both under a federal consent decree. Alameda concentrates everything in one mega-jail, Santa Rita, where realignment-era reality shows in a single number: the average stay of the sitting population rose from 218 days in 2019 to 303 days in 2024, nearly a year, in a building designed for short stays. San Francisco, the outlier, closed its crumbling, seismically unsafe Hall of Justice jail in 2020 and now runs the smallest big-city system in the state, which tipped over capacity in 2025 at about 1,300 people against 1,236 beds.
The Benefits and Costs of Running Both
Is the two-system design good for California? Honestly weighed, it has bought the state real things, and it bills the state for them too.
What it provides. Proximity, first: jails sit next to courthouses and families, which is what makes the 48-hour arraignment clock, daily court runs, and weekly visits physically possible, while prisons sit wherever land was cheap. Local accountability, second: an elected sheriff answers to the county’s voters for the jail in a way no distant state agency does, though legal scholars note that same autonomy gives sheriffs enormous, largely unreviewed power over who fills the beds. Flexibility, third: the split is exactly what let California survive Brown v. Plata by moving people between tiers instead of building more prisons, and it is why closures now save about $150 million per shuttered prison. And the system produces public goods: incarcerated fire crews covered 42 percent of California’s emergency response hours in 2024, reentry money flows through Proposition 47 savings, more than $490 million so far, and whole towns were built on the payrolls, for better and, as the closure era shows, for worse.
What it costs. Two systems mean two of everything: two medical bureaucracies that do not share records at the handoff, 58 county standards under a state board that mostly makes recommendations, death data scattered across 58 county disclosures instead of one clinical review, and duplicated overhead that has grown expensive enough that a county jail bed can now cost more than a state prison bed. The churn burden lands on the tier least equipped for it: the jails absorb detox, psychiatric crisis, and the deadliest first days with rotating staff and thin programming, while the stabilized population gets the structured system. The honest summary: the split is neither an accident nor an obvious mistake. It is California’s inheritance, and the reforms that measurably help, like state jail licensing with teeth and records that follow the person, borrow unification’s virtues without merging anything.
The County With No Jail, and the States With No Jails at All
If you want proof that the jail-prison split is a choice rather than a law of nature, California and New England both offer it.
Start in the Sierra. Alpine County, California’s least populated county, has no jail. Not an old one, not a small one: none. The county sheriff’s office states it plainly: “There are no jail facilities in Alpine County. Jail services are contracted to El Dorado County and Calaveras County.” Get arrested near Markleeville and you will be booked into the El Dorado County Jail in South Lake Tahoe, in a different county. Alpine has no state prison either, which makes it the one California county where neither system physically exists. Its neighbor Sierra County comes close: since 2015 its old jail has operated as a temporary holding facility only, with prisoners housed in Nevada County. That is why PPIC counts 56 of 58 counties with a long-term jail facility.
Now zoom out. Six states run what corrections professionals call unified systems: Alaska, Connecticut, Delaware, Hawaii, Rhode Island, and Vermont have no county jails at all. One state agency holds everyone, from the person arrested last night to the person serving twenty years. Connecticut merged its jails into its Department of Correction in 1968. Rhode Island goes further: its entire correctional system, jail function included, sits on one campus in Cranston, where the Intake Service Center serves as the state’s jail for men. A Rhode Islander can be booked, tried, sentenced, and paroled without ever changing agencies.
Unification is not magic, but it changes real things. The National Institute of Corrections’ review of unified systems found that resources spread evenly across the state instead of tracking county budgets, and state oversight gives more consistent quality control, at the cost of local flexibility. One measurable effect: Connecticut and Rhode Island’s custody death rates, with their jail populations included, ran 155 and 116 per 100,000 in 2019, below even the national jail rate, while California’s jail system alone ran about 206. And when a person moves from pretrial to sentenced in a unified state, their medical records, medications, and case managers move with them, because the agency never changes. In California, that same person is handed from one of 57 sheriffs’ systems to CDCR, two governments that keep separate records and answer to different oversight.
Before treating any of this as proof that merging is the answer, apply an honesty test: are these places built differently because it works better, or because their size and budgets allow it? Alpine County has no jail because a county of just over 1,000 people cannot justify staffing one around the clock; contracting with neighbors is arithmetic, not philosophy. The unified six are all small states: Connecticut, the largest, has under 3.7 million people, all six combined hold less than a quarter of California’s population, and the NIC’s own review records that Rhode Island unified in 1956 largely to save money. No state anywhere near California’s size has ever pulled its jails up into the state, and when California finally did move custody between tiers at scale, it went the opposite direction, pushing state prisoners down to the counties. The unified model is real evidence that the split is a choice. It is not evidence that a 39-million-person state could simply choose otherwise.
Is There a State That Runs Both Better Than California? The Data Says Minnesota
“Better” is a claim that needs numbers, so we pulled them. The honest headline: on every axis with credible data, Minnesota outperforms California and the national average on both halves of the system.
| Measure | California | Minnesota | National |
|---|
| Prison deaths per 100,000 (2019, last federal tables) | 330 | 113 | 330 |
| Prison suicide rate per 100,000 (2001-2019 average) | 21 | 16 | 18 |
| Jail deaths per 100,000 (2019) | 206 | about 121 | 167 |
| Sentenced state prisoners per 100,000 residents (2023) | 246 | 152 | 318 (state systems) |
| Three-year return to prison | Not comparable (see note) | 19 percent, second lowest of 32 reporting states | Virginia lowest at 17.6 percent |
Sources: BJS prison mortality tables, BJS jail mortality tables, BJS suicide tables, BJS Prisoners in 2023, Virginia DOC 50-state recidivism comparison, Minnesota DOC performance report.
What Minnesota does differently maps directly onto this article’s subject. Its state corrections department licenses and inspects every county jail, with real enforcement teeth, and an independent Ombuds for Corrections takes complaints about jails and prisons alike. California’s jail inspector, the BSCC, publishes standards and reports but, as one of its own board members told CalMatters, mostly ends up “making recommendations to sheriffs.” Minnesota treats the jail-prison divide as one system with two doors; California still runs it as 58 fiefdoms plus a state agency.
Three honesty notes, because comparisons like this get abused. The federal government stopped publishing state-by-state custody mortality after 2019, so the death-rate columns are the last official numbers, not current ones; California’s own 2024 prison figure, from its federal Receiver, was 443 per 100,000. Recidivism definitions differ so much that California is excluded from the standard 50-state comparison outright; its own three-year reconviction measure was 33.4 percent for the latest cohort, which CDCR reports as 66.6 percent staying conviction free, the second lowest rate on record, and it still is not apples-to-apples with Minnesota’s. And small states post noisy rates. The direction of every arrow, though, is the same, and it points north.
The same honesty test from the last section applies here, because Minnesota is not California at a smaller font. It has 5.8 million people to California’s 39.4 million; California is the most urbanized state in the country, carries the highest cost of living of any state and, adjusted for those costs, ties for the nation’s highest poverty rate, and holds 28 percent of the country’s entire homeless population, a population that cycles through jails at rates Minnesota never sees. The starkest scale fact: Los Angeles County’s jail system alone holds about 13,000 people, roughly 60 percent more than Minnesota’s entire state prison system. Some of Minnesota’s advantage is context, not policy. But not all of it: state licensing of jails with real enforcement power and an independent ombuds are choices, they are cheap relative to what California already spends, and nothing about California’s size prevents either one.
What the Difference Means for Your Family
Everything above becomes practical the moment someone you love is in custody. The system they are in decides what you can do.
Figure out which system they are in. If the arrest just happened, they are in a county jail, full stop; nobody goes from a courtroom straight to prison. Find them with the county’s inmate locator, walked through in our California inmate locator guide, or start with our guide to finding out if someone is in jail. If they were sentenced to state time weeks ago, check CDCR’s locator instead, and expect a gap: after sentencing, people wait in jail for transport, then spend up to 90 days in a reception center with sharply limited phone and visiting access. The post-sentencing silence is normal, not a sign something is wrong.
Act during the jail window, because that is when action is possible. Bail, own-recognizance release, and bail hearings all live in the jail phase, before conviction. This is our profession: our guide to how long release takes after posting bail covers the timeline, our bail FAQ covers costs and cosigners, and Bail Hotline agents answer (888) 958-1228 around the clock, with offices across California near the jails they serve. Once a case ends in a prison sentence, that window closes; bail on appeal exists under Penal Code 1272.1 but is discretionary and rare.
Learn the contact rules for whichever system you are dealing with. Jail visiting varies county by county and is often behind glass or by video, and phone costs vary too. Prison contact is more generous once classification ends: scheduled contact visits, free calls in California prisons, and for eligible people, overnight family visits that almost no other state offers. Families who learn each system’s rules early save themselves months of missed contact.
How to Stay Out of Both
The honest answer here has not changed since the original 2022 version of this article, only sharpened. The system is easiest to leave before it closes around you. Show up to every court date, because a missed appearance turns a citation into a warrant and a warrant into a booking; keep bail obligations current, because bail itself can put you back in jail if its terms are broken; take diversion, drug court, and program offers seriously, because they exist precisely to keep cases out of the felony pipeline that realignment now routes into county jail under Penal Code 1170(h); and get counsel involved early. The best time to understand the difference between jail and prison is before either one is holding someone you love.
Frequently Asked Questions
Is jail worse than prison?
Day to day, many people who have experienced both say yes. Jails have constant turnover, little programming, more lockdowns, and populations in crisis; prisons have routine, jobs, yards, and stability. As one man wrote after two decades in prison sent him back to a county jail, “Two Decades of Prison Did Not Prepare Me for the Horrors of County Jail.” Prison carries its own dangers, but the chaos concentrates in jail.
Do you go to jail before prison?
Yes. Nearly everyone sentenced to prison passes through county jail first: from arrest through arraignment, trial, and sentencing, then a transfer to a state reception center for classification. The jail phase can last days or years depending on the case and whether bail is posted.
Can you bail someone out of prison?
No. Bail is a pretrial mechanism that ends at conviction. The narrow exception is bail pending appeal under Penal Code 1272.1, which judges grant rarely and only where the appeal raises a substantial question and the person is neither a flight risk nor a danger. If your person is still in county jail, bail is very much alive; our bail FAQ explains how it works.
Who runs jails and who runs prisons?
In California, each county’s elected sheriff runs its jails under Government Code 26605, with standards set by the Board of State and Community Corrections. The state’s 31 prisons are run by CDCR, with medical care overseen by a federal Receiver. Federally, the Bureau of Prisons runs both prisons and its own pretrial detention centers.
What felonies go to jail instead of prison in California?
Since the 2011 Realignment law, felonies that are not serious, violent, or sex-registrable are generally served in county jail under Penal Code 1170(h), in terms of 16 months, two years, three years, or longer. Serious and violent felonies still go to state prison. This is why some people serve multi-year felony sentences without ever leaving their county jail.
How long can you stay in county jail?
Sentenced misdemeanors run up to a year, and realignment felonies can run years. People held before trial stay until their case resolves or they are released, which is why more than 79 percent of California’s jail population is unsentenced and why the pretrial window matters so much.
What is the difference between a jail, a penitentiary, a detention center, and a correctional facility?
“Correctional facility” is the umbrella term for all of them. A jail is local and short-term; a prison is state or federal and long-term; a penitentiary is an older word that now usually means a high-security federal prison, like USP Atwater; a detention center usually holds people before trial, for juvenile cases, or for civil immigration matters; a holding cell measures its stays in hours. Merriam-Webster notes both words have been in use for well over 700 years, with the distinction between them observed only loosely for most of that history.
What is the difference between state prison and federal prison?
State prisons hold people convicted under state law, which covers most crime; federal prisons, run by the Bureau of Prisons, hold people convicted of federal offenses. California hosts both: 31 state prisons plus federal facilities like USP Atwater, FCI Victorville, and the MDC Los Angeles detention center.
Are there states with no county jails?
Yes, six: Alaska, Connecticut, Delaware, Hawaii, Rhode Island, and Vermont run unified systems where the state corrections department holds everyone, pretrial and sentenced alike. Rhode Island’s entire system, jail included, operates from one campus in Cranston.
Do other countries have jails and prisons like the United States?
Mostly no. Most countries run one national corrections service that holds both pretrial (“remand”) and sentenced prisoners; Australia, Finland, Germany, and England all hold pretrial detainees inside the prison system, and Norway states outright that it has no separate pretrial prisons. Canada comes closest to the American split, but its lower tier is 13 provincial and territorial systems, not thousands of county jails. Only three other countries, China, Brazil, and India, imprison more people in total than American jails hold awaiting trial.
Which California jails and prisons are the worst?
We maintain documented rankings of both, built from audits, court findings, death data, and testimony: the 10 worst county jails in California and the 10 worst state prisons in California.
Sources and Further Reading
Key sources behind this article, plus further reading, all accessed August 2026:
- Bureau of Justice Statistics: correctional institutions definitions, Jail Inmates 2023 and the 2024 preliminary jail data, and Prisoners in 2023
- BJS mortality series, final state tables: prisons 2001-2019, local jails 2000-2019, and suicide tables
- PPIC: California’s County Jails (January 2026) and California’s Prison Population
- CDCR weekly population report, August 19, 2026 and facility locator
- California Government Code 26605 and Penal Code 1170(h); Judicial Council realignment overview
- The Assize of Clarendon, 1166; Encyclopedia of Greater Philadelphia: Prisons and Jails; Eastern State Penitentiary history; Britannica: the Auburn system
- San Quentin Museum history and FoundSF: the prison ship Euphemia
- National Institute of Corrections: unified corrections systems review; Connecticut DOC history; Rhode Island DOC facilities
- Alpine County Sheriff and Sierra County Temporary Housing Facility
- Virginia DOC 50-state recidivism comparison; Minnesota DOC performance report; Minnesota jail inspection unit
- CCHCS mortality analysis, 2024; CalMatters jail deaths investigation; UCLA Law on the end of federal mortality reporting
- Firsthand accounts: Christopher Blackwell in The Appeal, The Marshall Project’s Rikers oral history, UC Irvine PrisonPandemic archive, Vera Institute on Men’s Central Jail, Prison Journalism Project, and Margo Schlanger’s jails-prisons comparison
- Operations and the pipeline: Penal Code 825, Penal Code 1216, 15 CCR 3075 on intake and county reimbursement, 15 CCR 3274 counts and 3040 work assignments, Title 15 jail standards on out-of-cell time and visiting, Rules of Court rule 4.415
- Money and the dual system: LAO realignment retrospective, LAO annual cost per prisoner, LAO 2025-26 corrections spending plan, CJCJ on county realignment spending, Contra Costa grand jury on jail costs, Prop 47 savings awards, CDCR conservation camps and the 2024 fire season numbers
- County systems: LASD custody population reports, San Diego Detention Services, Orange County Custody Operations, Riverside Corrections, San Bernardino Corrections, Sacramento jail fact sheet, Alameda County jail population analysis, the LA Citizens’ Commission on Jail Violence
- International: Norwegian Correctional Service, World Prison Brief country profiles, Justice Policy Institute on pretrial detention and remand, Statistics Canada on the two-year rule, Prison Policy Initiative’s Whole Pie and global comparison, NIJ on Scandinavian-inspired reforms
This article is provided for general information and is not legal advice. Figures carry the dates of their sources; if you spot something that has changed, contact us and we will update it.
