MoBetta California!

National mapCalifornia › Mariposa County

California · County seat: Mariposa · Checked 2026-08-23

Mariposa County

The jail, the sheriff who runs it, and the judges who decide who sits inside. Every fact below comes from a named public record. Anything not yet sourced is marked still needed rather than guessed.

The Detention Center

Mariposa County Adult Detention Facility

Source: Mariposa County — Adult Detention Facility · checked 2026-08-23

Transparency rating

3/10Closed

This rates disclosure, not conduct — what Mariposa County publishes about a jail its taxpayers own, checked 2026-08-23. Nothing here says the jail is run well or badly. Every mark moves the moment the county posts the document.

The Building

You paid for it. Here is what the record says it cost.

Since then

  • Not found

The Sheriff

Sheriff Jeremy Briese

Still needed
  • Detention budget requested vs. approved, by year
  • Jail staffing levels and vacancy rate
  • Lawsuits and settlements involving the jail

Source: Mariposa County — Sheriff's Office · checked 2026-08-23

The Judges

The Mariposa Superior Court website has no judges or judicial-assignments page. The two judges and their roles were taken from the court's own letterhead on its August 5, 2026 public notice of annual budget allocation. The roles reversed during 2026: the court's October 2025 public notice (https://www.mariposa.courts.ca.gov/system/files/general/public-notice-2025-2026-pursuant-gc685117.pdf) shows Fagalde as Presiding Judge and Starchman Bryant as Assistant Presiding Judge. The court publishes 2026 bail schedules at https://www.mariposa.courts.ca.gov/system/files/local-rules/bail-schedules-2026.pdf.

Still needed
  • The county's bond schedule
  • Share of the jail population held pretrial
  • Median time from booking to first appearance

Source: the state judiciary · checked 2026-08-23

The County Commissioners

They pay for the jail. The sheriff runs it.

Notes on the record

What California law requires

Mariposa County posts a death-in-custody page.

Posts 0 of 7

The page is here. The page exists and states: 'The following deaths occurred at the Mariposa County Adult Detention Facility for which the Mariposa County Sheriff's Office has custodial responsibility. The circumstances of all unexpected in-custody deaths are investigated by an outside agency and reviewed by the Mariposa County District Attorney's Office.' A year selector offers only 2023. The 2023 report (https://www.mariposacounty.gov/DocumentCenter/View/93941/2023-Deaths) is a one-page table headed Date, Race, Gender, Age, Manner & Means of Death, Location within Facility, Custodial Status — the statutory columns — with the single entry 'Nothing to Report'. No death is therefore published and elements_present is empty. The page does not cite AB 2761 or Penal Code 10008. California DOJ Death in Custody data record one Mariposa death with county custodial responsibility since 2023: 2023-09-09, at a crime/arrest scene, custody status 'process of arrest', manner recorded as justified homicide by law enforcement staff — a death outside the detention facility, which this page's scope does not cover.

  • The agency with custodial responsibility
  • The county where the death occurred
  • The facility — and where inside it
  • Race, gender and age
  • The date of death
  • Custodial status — awaiting arraignment, awaiting trial, or incarcerated
  • Manner and means of death

California Penal Code § 10008, enacted by AB 2761 and in force since January 2023, requires the agency with custodial responsibility to post these seven items on its own website within ten days of a death in custody, and to update them within thirty days if the facts change. California is the only state in the country with this duty. Checked 2026-08-23. This records what is published, nothing more.

The record

1 people have died in the Mariposa County jail since 2021.

0 by suicide
0 illness or medical
1 deaths in all, 2016 onward
Deaths where the person had not been convicted of the charge holding them1 of 1
Most recent death on the state's record2021-09-15

Deaths: Texas Justice Initiative, the cleaned copy of the Texas Attorney General’s custodial death reports — the state’s own public index carries no cause of death and has not been refreshed since August 2025. Population: Texas Commission on Jail Standards monthly report. Counted, not estimated.

These three offices decide who sits in a cell in Mariposa County and what it costs the people who live here. Nationally, almost 77% of the people who died in local jails in 2019 had not been convicted of anything, and suicide was the leading single cause of those deaths (Bureau of Justice Statistics, Mortality in Local Jails, 2000–2019).

How much is your sheriff — and your judge — costing you?

Your VOTE is POWERFUL.

The sheriff who runs this jail is elected. So are the commissioners who pay for it.

The sheriff is on your ballot

The county elections office runs the polling place in Mariposa County and prints the ballot the sheriff’s name is on. Links from the California Secretary of State and vote.gov.

Names verified 2026-08-23 · dollars and outcomes still being gathered