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Mariposa County jail information.
California. By facility.

One local jail holds people arrested in Mariposa County: Mariposa County Adult Detention Facility. Its guide has the address, phone, visiting, mail and money details families need.

All California counties Facility information, not live custody records.
Local adult custody

Mariposa County Adult Detention Facility

5379 Highway 49 N
Mariposa, CA 95338
Call the jail
(209) 966-3616
Sheriff's office
(209) 966-3615
Location
Mariposa, CA
Open the facility guide Directions

Housing and release status change. Confirm the person is still here before driving, mailing or depositing money.

The local jail

Open a facility for its address, phone and family rules.

Sheriff and police in Mariposa County

3 listed agencies. The arresting agency is usually not the holding facility.

All 3 agencies

Family next steps

Plan the next step from the right facility.

01

Confirm adult custody

Daily Booking Report (last 24 hours) or call (209) 966-3616. Jail411 does not host inmate names. CIRIS is Mount Bullion / CDCR, not this jail. VINE 877-411-5588 is release notification.

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02

Adult jail visiting

5379 Highway 49 N. One hour per week by housing block. First come, first served. Call (209) 966-3616 the day you drive. No contact visits.

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03

Send adult jail mail

Non-legal letters to PO Box 591, Longview, TX 75606 with booked name and number. Legal/medical to PO Box 727, Mariposa. Not Juvenile Hall. Not Mount Bullion.

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04

Send money / commissary

MyCarePack, lobby kiosk, or (866) 345-1884. Deposit by 9:00 p.m. Monday for that week’s commissary. Location name: Mariposa County Jail.

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05

Phones and video

NCIC. Video $0.30/min, messages $0.25, pictures $0.35. Help 1-800-943-2189. Spanish cuenta.ncic.com. Outgoing non-attorney calls are billed; three-way calls prohibited.

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06

Look up a court case

Mariposa Superior Court portal (accept the terms at mariposa.courts.ca.gov/online-services/case-information). Weekly calendar PDF on the court site. Clerk (209) 966-2005.

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07

Which courthouse?

One Historic Courthouse: 5088 Bullion Street, offices 8:00 a.m.–3:00 p.m. Free parking all sides. ADA at the Jones Street rear door. Jail visiting is 5379 Highway 49 N.

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08

Youth detention (not the adult jail)

96-hour special-purpose hall at 5091 Bullion Street. Longer stays: Tuolumne, Madera, or Kern halls. Call Probation (209) 966-3612. No NCIC, no MyCarePack, no Longview TX box.

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Other custody and specialized locations

Different buildings. Different rules.

Juvenile

Mariposa County Juvenile Hall

Mariposa County Probation operates this special-purpose 96-hour detention facility at 5091 Bullion Street — the same campus as Probation, not the adult jail on Highway 49 N. Official Juvenile Hall page (checked 2026-09-12): youth arrested and not released are delivered to Probation here for a detention risk assessment. Youth who must stay in custody are transported to a full-service hall. Mariposa currently contracts with Tuolumne, Madera, and Kern County Juvenile Halls. Chief Probation Officer Ryan Oliphant. Probation (209) 966-3612. Do not invent visiting hours. Do not use adult NCIC, MyCarePack, or Longview TX mail.

5091 Bullion Street, Mariposa, CA 95338
Cdcr

Mount Bullion Conservation Camp #39

CDCR / CAL FIRE conservation camp at 5730 Mount Bullion Access Road, Mariposa, CA 95338 — (209) 742-5494. Official CDCR page (checked 2026-09-12): Camp Commander Lt. A. Heningburg; Assistant Camp Commander Sgt. K. Silva. Confirm CDCR custody on CIRIS, not the county Daily Booking Report. Visiting is CDCR conservation-camp scheduling (call/email the camp), not Sheriff housing-block hours. Do not use MyCarePack, NCIC county-jail phones, or Longview TX mail for a camp participant.

5730 Mount Bullion Access Road, Mariposa, CA 95338
  • Adult jail: Daily Booking Report at mariposacounty.gov/2757/Daily-Booking-Report (last 24 hours). Call (209) 966-3616 to confirm the person is still here and to get the incarcerated-person number for mail. VINE 877-411-5588 is release notification, not the live roster.
  • Adult jail door: 5379 Highway 49 N. Sheriff HQ is 5099 Old Highway Road. Business Office / civil / fingerprinting is 5284 Highway 49 N (Monday–Thursday 8:00 a.m.–5:00 p.m.). Dispatch and evidence are 4963 10th Street. Historic Courthouse is 5088 Bullion Street. Juvenile Hall / Probation is 5091 Bullion Street. Mount Bullion Camp is 5730 Mount Bullion Access Road.
  • Youth: official Juvenile Hall page — 96-hour special-purpose facility at 5091 Bullion Street. Longer detention is Tuolumne, Madera, or Kern County Juvenile Halls. Call Probation (209) 966-3612. Do not mix adult NCIC / MyCarePack / Longview TX mail with youth. Visiting hours for this 96-hour hall are not published — do not invent them.
  • Mount Bullion Conservation Camp #39 is CDCR. CIRIS, CDCR camp visiting, and CDCR mail — not this county jail.

Court, counsel and supervision

Use the office that handles this part of the case.

Superior Court

Mariposa County Superior Court — Historic Courthouse

Official location (checked 2026-09-12): offices Monday–Friday 8:00 a.m.–3:00 p.m. (effective October 1, 2021). Mail PO Box 28, Mariposa, CA 95338. Free parking on all sides of the building. Main entrance faces Bullion Street; ADA at the rear entrance facing Jones Street. Serves criminal, traffic, civil, family, juvenile delinquency and dependency, probate, small claims, CARE Court, and more. Weekly calendar PDF: mariposa.courts.ca.gov/general-information/court-calendars. Case portal after terms of use. This is not jail visiting at 5379 Highway 49 N.

5088 Bullion Street, Mariposa, CA 95338

Public defense and appointed counsel

Appointed counsel — ask the judge at arraignment

County staff directory (checked 2026-09-12) does not list a Public Defender department. Local Rules (effective Jan. 1, 2019) cover appointment of counsel in juvenile dependency, not a county PD office address. Ask the judge at the first appearance at 5088 Bullion Street. Court Self-Help Center at 5092 Jones Street, (209) 742-5322, is closed until further notice and is family-law / SHARP — not criminal defense.

Historic Courthouse, 5088 Bullion Street, Mariposa, CA 95338

District Attorney

Mariposa County District Attorney

Official DA contact (checked 2026-09-12): Monday–Friday 8:00 a.m.–5:00 p.m. Mail P.O. Box 730, Mariposa, CA 95338. Fax (209) 966-5681. mcda@mariposacounty.org. Assistant District Attorney Gerard Egan. Not jail visiting.

5085 Bullion Street, Mariposa, CA 95338

DA Victim Witness

Official Victim Witness (checked 2026-09-12): same DA building and phone. Supervisor Pamela Whitfield. CalVCB, victim impact statements, restitution form, VINE, Safe at Home. Mail P.O. Box 730. Not a prosecutor and not legal representation.

5085 Bullion Street, Mariposa, CA 95338

Probation

Mariposa County Probation Department

Official Probation and Contact Us (checked 2026-09-12): Chief Ryan Oliphant. Monday–Friday 8:00 a.m.–noon and 1:00–5:00 p.m. Mail PO Box 76. Fax (209) 742-5961. Adult Division includes pre-trial investigation and supervision, alternative sentencing (community service, Probation Works Program at the landfill, SCRAM, electronic monitoring / home detention), AB 109. A probation hold can block release after bail. This door is also Juvenile Hall housing — not adult-jail visiting.

5091 Bullion Street, Mariposa, CA 95338

Juvenile Hall (96-hour special-purpose)

Housing / intake door on the Probation campus. Official page: 96-hour special-purpose hall; longer detention is contracted to Tuolumne, Madera, or Kern. Call before you drive. Visiting hours are not published. Not the adult jail.

5091 Bullion Street, Mariposa, CA 95338

Parole, records and family support

Mariposa County Sheriff’s Office — Headquarters

Official Sheriff contact (checked 2026-09-12): Sheriff Jeremy Briese. Undersheriff Kevin Packard. Mailing P.O. Box 276, Mariposa, CA 95338. Fax (209) 742-5090. Law enforcement 24/7. Emergencies 911. This HQ is not jail visiting — visiting is 5379 Highway 49 N, (209) 966-3616.

5099 Old Highway Road, Mariposa, CA 95338

Sheriff’s Business Office / Civil Process

Official Divisions and Sheriff contact (checked 2026-09-12): Monday–Thursday 8:00 a.m.–5:00 p.m. Fingerprinting and CCW by appointment, ext. 2224. Report requests, miscellaneous permits, dog licenses, civil process (drop box after hours; mail civil to P.O. Box 276). SER-001 for service of court papers. Lobby computer for county online services. Not the jail visitor door.

5284 Highway 49 N, Mariposa, CA 95338

Sheriff Dispatch / Evidence

Official Divisions (checked 2026-09-12): Dispatch is across from the Administration Building; all 911 calls for the county are received here. Dispatch (209) 966-3614. Evidence by appointment only, (209) 966-3615, Monday–Thursday 7:00 a.m.–2:30 p.m. Sheriff FAQ: Megan’s Law directory viewing Tuesdays and Thursdays 1:00–4:00 p.m. at 4963 10th Street (valid California DL or ID; 18+). Not jail visiting.

4963 10th Street, Mariposa, CA 95338

Sheriff Station #1 — Greeley Hill (Megan’s Law viewing)

Sheriff FAQ (checked 2026-09-12) names Station #1, 10459 Fiske Road, Greeley Hill as the second Megan’s Law viewing location, Tuesdays and Thursdays 1:00–4:00 p.m. with a valid California DL or ID. Not a jail roster and not visiting. Bookings go to 5379 Highway 49 N.

10459 Fiske Road, Greeley Hill, CA

California Highway Patrol — Mariposa

County law-enforcement inventory. Emergencies 911. CHP arrestees booked into county jail go to 5379 Highway 49 N — use the Daily Booking Report or (209) 966-3616 for custody, not this CHP office.

5264 State Highway 49 North, Mariposa, CA 95338

CDCR parole — Ceres unit (Merced address)

State parole, not Mariposa County Probation. CDCR Northern Region directory updated 9/11/2026 lists Ceres at this Merced street. Ceres & Modesto is also 1051 Partee Lane, Ceres, CA 95307, (209) 556-5010. No Mariposa city parole office is listed. Report to the office named in the release papers.

439 West 15th Street, Merced, CA 95340

Sources and review

Official information for Mariposa County.

Source set reviewed .

Practical information.
Before you visit, call or send.

Start with the general process. Then use the Mariposa County Adult Detention Facility guide for the local details available there.

Visiting

Schedules, visitor approval, identification and arrival.

Read the guide

Phone calls

Calling accounts, approved providers and connection issues.

Read the guide

Mail & photos

Mailing addresses, permitted contents and delivery rules.

Read the guide

Money & commissary

Deposit methods, account types and fees to check.

Read the guide

Different custody systems.
Different places to start.

A Mariposa County arrest usually means the county jail. A state sentence, a federal case or an immigration hold means a different system with its own locator and rules.

Understand jail and prison differences

Clear information.
Clear boundaries.

Jail411 is an independent information resource for families and friends. We are not a government agency, jail operator, law firm or live custody-records service.

Where is the adult jail?

Mariposa County Adult Detention Facility is at 5379 Highway 49 N, Mariposa. It is not Sheriff headquarters, the Business Office, Juvenile Hall, or the courthouse.

Where does adult non-legal mail go?

Since June 1, 2024, non-legal mail goes to Mariposa County Detention Center, PO Box 591, Longview, TX 75606 with the booked name and incarcerated-person number. Legal and medical mail goes to PO Box 727, Mariposa.

How do I confirm adult custody?

Check the official Daily Booking Report for bookings in the last 24 hours, then call (209) 966-3616 to confirm the person is still held and obtain the number needed for mail.

How does visiting work?

Visits are non-contact and limited to one hour per week by housing block. They are first come, first served at 5379 Highway 49 N; call (209) 966-3616 the day you travel.

How can I fund commissary?

Use MyCarePack, the jail-lobby kiosk, or call (866) 345-1884. The Sheriff says deposits must arrive by 9:00 p.m. Monday for that week's commissary.

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Jail411 source information preserved on 2026-09-25.Official sources appear alongside the relevant information.