People use them interchangeably, but jail and prison are different systems.
The short version: a misdemeanor can never send you to prison. Prison is for serious felonies.
County Jail
County jail is run by the county sheriff. It holds people awaiting trial and those serving misdemeanor sentences (up to a year) — and, since realignment, many lower-level felony sentences too. Most misdemeanor custody, when it happens at all, is short and often served through alternatives like work programs.
State Prison
State prison is run by the state (CDCR) and is reserved for serious and violent felonies and longer felony terms. A wobbler charged as a felony can carry prison exposure — which is exactly why keeping a case a misdemeanor matters so much.
Why Misdemeanors Never Mean Prison
By definition, a misdemeanor is punishable by up to a year in county jail — never state prison. So if you are facing a misdemeanor, prison is not on the table. The real fight is usually about avoiding a conviction entirely, or keeping a wobbler a misdemeanor.
Frequently Asked Questions
What is the difference between jail and prison in California?
County jail, run by the sheriff, holds people awaiting trial and those serving misdemeanor sentences (up to a year) and, since realignment, many lower-level felony sentences. State prison, run by CDCR, is reserved for serious and violent felonies and longer felony terms.
Can you go to prison for a misdemeanor?
No. By definition a misdemeanor is punishable by up to a year in county jail — never state prison. If you are facing a misdemeanor, prison is not on the table.
When does a case carry prison exposure?
When it is a felony — particularly a serious or violent one, or a wobbler charged as a felony. That is why keeping a wobbler charged or reduced to a misdemeanor is so important: misdemeanors carry only county-jail exposure, not prison.
GuidesComplete Guide to California Misdemeanors · Glossary · Penalties Reference.
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Ahmed S. Hasan
San Francisco Criminal Defense Attorney · State Bar of California #364992
Ahmed S. Hasan is the founder of ASH Legal, a solo criminal defense practice based in San Francisco. The firm runs on flat-fee representation: one lawyer, one fee, from arraignment through resolution. No hourly billing. No surprise invoices.
Ahmed is a graduate of Emory University School of Law and a member in good standing of the State Bar of California (Bar #364992). His practice focuses on San Francisco misdemeanor defense — DUI, domestic violence, petty theft and shoplifting, drug possession, vandalism, trespassing, and assault and battery — with particular attention to diversion-track outcomes that end in dismissal under PC 1001.95, PC 1001.36 (Mental Health Diversion), PC 1001.80 (Military Diversion), and PC 1001.83 (Parental Caregiver Diversion).
Ahmed previously served as a post-bar clerk with the San Francisco Public Defender's Office, the city's largest indigent-defense practice. He is a member of the Asian Pacific American Bar Association of Silicon Valley.
He represents clients at the San Francisco Hall of Justice (850 Bryant Street) and the Civic Center Courthouse. The ASH Legal office is at 15 Boardman Place, Suite 301, San Francisco, CA 94103.
Free 30-minute consultations are available by phone or Zoom. (510) 545-6515 · ahmed@ashlegal.com