The Detention Center
Fallon County Jail (Fallon County Detention Center)
- Operated byFallon County Sheriff's Office
- Address10 W Fallon Ave, Baker, MT 59313
- RosterCurrent-inmate list published with charges and bond amounts, dated (e.g. "Last updated: 7-27-2026")
- Historic buildingThe county's original 1913-era jail (723 S. Main St., Baker) is now part of the O'Fallon Historical Museum and is on the National Register of Historic Places — it is not the operating jail
- Year built / cost / beds (current jail)Not found
Source: Fallon County Sheriff's Office · checked 2026-08-24
Transparency rating
3/10Closed- ✓The jail is named
- ✓Who is in custody
- ✗Beds and daily population — not published
- ✗What it costs taxpayers — not published
- ✗Deaths in custody — not published
- ✗PREA audits — not published
- ✗Independent inspection — not published
- ✗Who else it holds, and for how much — not published
- ✓How to post bond
- ✗Phone, video and commissary rates — not published
The Building
You paid for it. Here is what the record says it cost.
- Year builtNot found (current operating jail)
- Original costNot found
- Paid for byNot found
- BedsNot found
Since then
- Not found
The Sheriff
Sheriff Trenton Harbaugh
- Runs the jailYes — the Fallon County Detention Center / Jail
- TitleSheriff/Coroner
- How the office is filledElected
- Detention budget requested vs. approved, by year
- Jail staffing levels and vacancy rate
- Lawsuits and settlements involving the jail
Source: Fallon County Sheriff's Office · checked 2026-08-24
The Judges
Montana District Court judges (16th Judicial District, covering Custer, Carter, Fallon, Garfield, Powder River, Rosebud and Treasure counties) and the Justice of the Peace are both elected and are not county officials.
16th Judicial District Court
- Hon. Michael B. Hayworth
- Hon. Rennie L. Wittman
Justice Court — Justice of the Peace
- Hon. Anna K. Straub
- The county's bond schedule
- Share of the jail population held pretrial
- Median time from booking to first appearance
Source: the state judiciary · checked 2026-08-24
The County Commissioners
They pay for the jail. The sheriff runs it.
- What they controlThe detention budget, the building itself, and the agreements that let other agencies rent its beds.
- What they don'tDay-to-day operations. The sheriff is separately elected and answers to voters, not to the board.
- The boardBoard of County Commissioners →
- Where the jail money is decidedAgendas and minutes →
Notes on the record
- Montana has no confirmed statutory adult jail inspection agency; state_inspection is left blank per the research brief.
- The sheriff's page FAQ gives clear guidance on where and how to post bail/pay a fine (at the court that handled the case, or after-hours through the Sheriff's Office), so bond_info is marked yes.
- Board of County Commissioners: Kevin Braun (Chairman, District 1), Roy Rost (District 2), Mandi Varner (District 3)
These three offices decide who sits in a cell in Fallon 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.
Names verified 2026-08-24 · dollars and outcomes still being gathered