Mariposa County Adult Detention Facility Inmate Search

Last updated by Elizabeth Boyle

Search for an Inmate or Active Arrest Warrant in Mariposa County

California • Mariposa County • Arrest help

Arrested in Mariposa County: checking the Highway 49 jail

Mariposa County is a gold-country county with no cities, best known as the gateway to Yosemite. Adults are held at the Mariposa County Adult Detention Facility, 5379 Highway 49 North, Mariposa (209-966-3616). Search Mariposa County Inmate Search.

What if the arrest happened in Yosemite?

Arrests inside Yosemite National Park are often made by park rangers and may go to federal court in the park. Arrests by Sheriff's deputies or the CHP go to the Mariposa County Adult Detention Facility.

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Looking someone up

Mariposa County Inmate Search shows the few dozen people held on Highway 49. The jail desk at 209-966-3616 can confirm a recent booking.

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Court in Mariposa

The historic courthouse at 5088 Bullion Street holds the first hearing within the state's two-court-day limit. Its clerk takes calls at 209-966-2005 on weekday mornings and early afternoons. Read Mariposa court steps.

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Bail in Mariposa

Scheduled bail can be paid at the Highway 49 desk, either the full amount or through a bondsman. Mariposa's judge looks at that sum at arraignment, considering whether the person can afford it. See the Mariposa bail guide.

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Lawyers

A contract public defender is appointed by the judge at arraignment for people who qualify.

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Visiting

Call 209-966-3616 to set up a visit. The facility is small, so visit times are limited. Bring photo ID. See Mariposa visits and video visiting.

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Mail and money

Letters go to 5379 Highway 49 North, Mariposa, CA 95338, with the name and booking number. Mariposa pages explain letters, trust deposits, commissary, phones, messages, tablets.

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Youths in Mariposa

Mariposa holds youths short-term, up to 96 hours, in a special-purpose juvenile hall. Longer detention is at the regional juvenile facility in Sonora (209-536-6700). Probation is at 209-742-1282.

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Is a bail call real?

Mariposa deputies never ask families to pay bail by phone, gift card or wire. Call 209-966-3616 to check with the jail directly.

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What happens after a federal arrest in Mariposa?

Federal arrests come from the DEA, the IRS and the Marshals Service, at times with city police. Arrests in Yosemite National Park may be heard by the federal magistrate in Yosemite, 9004 Castle Cliff Court, Yosemite, CA 95389 (209-372-0320). Court dates in these cases happen in the federal courthouse in Fresno, 2500 Tulare Street, Fresno, CA 93721, part of the Eastern District of California's Fresno Division. The clerk there takes calls at 559-499-5600. Before that hearing, a pretrial services officer checks their job, family and record. Usually by the next court day, the inmate sees a magistrate judge. Cash is not the main question on federal charges. A judge considers safety and the risk they'll flee at a short hearing applying federal bail law.

Search the sheriff's roster; there U.S. Marshals custody might appear. Meanwhile, the Marshals Service can hold them in local jails. The district's Marshals staff in Fresno can tell you where they are: 559-442-2858, 2500 Tulare Street, Suite 3501, Fresno, CA 93721. With a federal prison sentence, the federal Bureau of Prisons (BOP) assigns a facility. Find them with the BOP's inmate locator.

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ICE detainer: what to expect

  • Immigration officers learn about the arrest through the prints staff send. ICE can then lodge a detainer.
  • Rather than leaving, the person can be held up to 48 more hours for ICE. It keeps running on holidays and weekends.
  • A posted bond doesn't lift an ICE hold.
  • Officers from ICE can pick them up at the Mariposa jail before the 48 hours end. If the pickup doesn't happen, that means your loved one goes free once the time is up.
  • Loved ones can follow them on the web through the ICE online locator, which asks for the A-number and their native country. The locator has a search by full name when the number is unknown, which needs the full legal name with birth date and country of birth.
  • ICE manages this county's cases out of its San Francisco office, at 630 Sansome Street, Room 590, San Francisco, CA 94111; call 415-365-8800.
  • Where they're sent is ICE's call.
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Could a prison term lead to a state unit, and what happens next?

A state prison sentence is handled by California's prison agency (CDCR). First, most people stay in the Mariposa jail until the CDCR has room, which can take weeks. Reception comes first; paperwork, photos and tests. CDCR staff sort new arrivals by medical and mental care, gang connections and security level. The final step is a facility that suits their needs.

To find their unit, check the CDCR online locator. For each unit, open California state prisons.

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Does Mariposa County show mugshots online?

Check the Mariposa jail search for the person; Mariposa may not post mugshots there.

Section 13665 sets the state rule. It is about social media only. Most nonviolent arrests fall under it. Agencies may not post those photos there. Photos posted there expire after 14 days. Fugitives and threats are the exceptions. Jail websites are outside this law. Still, most California rosters show no photos.

To ask for a booking picture that isn't public, journalists should reach sheriff's staff, 209-966-3615. Federal booking photos aren't shared with reporters or the community. There must be a clear reason. The Marshals put one out only for an escaped prisoner or fugitive, when there's an immediate safety need, or when publishing it aids the search or a warning to residents. ICE pictures are released just through ICE's online public records request, if the agency agrees.

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Which agency arrested them in Mariposa County?

There are no city police departments in Mariposa County.

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Mariposa County contacts

Mountain roads are slow; plan extra time.

Mariposa County Adult Detention Facility Inmate Services Information

Phone: 209-966-3616

Physical Address:
5379 Highway 49 North
Mariposa, CA 95338

Mailing Address (personal mail):
Inmate's Full Name & ID#
Mariposa County Detention Center, CA
PO BOX 591
Longview, Texas 75606

Mailing Address (legal mail or subscriptions):
Inmate's Full Name & ID#
Mariposa County Adult Detention Facility
Post Office Box 727
Mariposa, CA 95338

Every year Mariposa County law enforcement agencies arrest and detain 3,000 offenders, and maintain an average of 150 inmates (county-wide) in their custody on any given day.

The weekly turnover rate of inmates is approximately 55%, meaning that every week more than half of these inmates are released and then replaced with new offenders being booked into jail.

The charts below break down the men, women, races, ethnicities and the types of crimes that people are arrested and incarcerated for in both Mariposa County and state prisons throughout the country. This information is compiled from local police and the Mariposa County Sheriff's Department, as well as the state of California and the United States Department of Justice and Census Bureau.

If you are looking for a prisoner in California or Federal custody, click on the appropriate institution below.

If you are searching for an inmate being held in another county in California, click below.

STATE OF California COUNTY JAILS

If you are searching for a prisoner in a California State Prison click below.

California Prison Inmate Search

If you are searching for a United States Federal Bureau of Prisons Inmate click below.

Federal Bureau of Prisons Inmate Search

For ICE Detainees (Immigration) being held at a detention facility in the United States, click below.

ICE Detainee Search

Mariposa County Inmate Race & Ethnicity - 10/26/2026

Race Inmates % Total
White 70 61.40%
Black 3 2.63%
Hispanic or Latino 31 27.19%
American Indian/Native Alaskan 4 3.51%
Asian 2 1.75%
Pacific Islander/Native Hawaiian 2 1.75%
Other 2 1.75%
Total 114 100.0%
Demographic, Crime and Inmate data is compiled from public reports provided by the Mariposa County Sheriff’s Department, California Corrections, United States Department of Justice, Federal Bureau of Investigation and the United States Census Bureau.

Mariposa County Inmate Criminal Charges - 10/26/2026

(many inmates have multiple charges)

Charge Inmates % Total
Felony (3rd Degree) 25 21.93%
Felony (2rd Degree) 29 25.44%
Felony (1st Degree) 6 5.26%
State Jail Felony 9 7.89%
Felony (Uncategorized) 20 17.54%
Misdemeanor (Class A) 25 21.93%
Misdemeanor (Class C) 0 0.00%
Holds 0 0.00%
Uncategorized 0 0.00%
Demographic, Crime and Inmate data is compiled from public reports provided by the Mariposa County Sheriff’s Department, California Corrections, United States Department of Justice, Federal Bureau of Investigation and the United States Census Bureau.

Mariposa County Inmate Sex - 10/26/2026

Sex Inmates % Total
Male 96 84.21%
Female 18 15.79%
Total 114 100.0%
Demographic, Crime and Inmate data is compiled from public reports provided by the Mariposa County Sheriff’s Department, California Corrections, United States Department of Justice, Federal Bureau of Investigation and the United States Census Bureau.

Mariposa County Inmate Age - 10/26/2026

Age Inmates % Total
Under 18 2 1.75%
18-20 6 5.26%
21-24 11 9.65%
25-30 21 18.42%
31-35 20 17.54%
36-40 19 16.67%
41-45 14 12.28%
46-50 8 7.02%
51-55 5 4.39%
56-60 5 4.39%
61-65 1 0.88%
66-75 1 0.88%
76-85 1 0.88%
Total 114 100.0%
Demographic, Crime and Inmate data is compiled from public reports provided by the Mariposa County Sheriff’s Department, California Corrections, United States Department of Justice, Federal Bureau of Investigation and the United States Census Bureau.
Demographic, Crime and Inmate data is compiled from public reports provided by the Mariposa County Sheriff’s Department, California Corrections, United States Department of Justice, Federal Bureau of Investigation and the United States Census Bureau.