SearchSystems Editorial

Reviewed and updated October 11, 2026 by the SearchSystems.net editorial team. Every office link on this page was opened and checked against the office's own website at review time.

About this guide

Jefferson County is a county in Montana with about 13,000 residents (2024 Census Bureau estimate). Its public records are not in one place: court cases, jail bookings, deeds, property values, vital records and records requests each belong to a different office. This guide names the office that holds each kind of record, links to its own website and gives the phone number and address where the office publishes them. SearchSystems verified 7 county office pages for Jefferson County, every one opened and checked.

In this guide: Where the records live, Jail and arrests, Court records, County Clerk, Deeds and property, Vital records, County Attorney, Records requests, Statewide sources, More directory links, Cities and towns, Other counties and Questions.

Where Jefferson County public records live

Each kind of Jefferson County record is kept by a different office. The list below names the office SearchSystems verified for each one; the sections that follow give its phone, address and hours where the office publishes them.

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Arrests, jail and inmate lookups in Jefferson County

A person arrested in Jefferson County is booked into the jail, and the booking record (name, charges, bond and the next court date) is public in most cases. The office below is the one SearchSystems verified for jail and inmate information in Jefferson County.

  • Website: jeffersoncountysheriffmt.gov/detention-center (page title: Jefferson County Detention Center | Jefferson County Sheriff's Office)
  • Phone: (406) 225-4078
  • Address: 110 S. Washington St. Boulder, MT 59632
  • Hours: Tuesday, Wednesday, Sunday: 9AM - 6PM
  • Checked: October 9, 2026, the page answered.

Jail rosters usually show the people in custody now. Once a person is released, the case continues in the court records below.

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Court records and case lookups in Jefferson County

Civil, criminal, family, probate and traffic cases filed in Jefferson County are kept by the clerk of the court that heard them. Many courts offer an online case search; the page below is the one SearchSystems verified for Jefferson County.

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County Clerk of Jefferson County

The county clerk is the county's record keeper. What the office holds differs by state: in some states it files marriage licenses and vital records, in others deeds, court papers or the meeting records of the governing board. Its own website below says what it holds in Jefferson County.

  • Website: jeffersoncounty-mt.gov/clerk_recorder (page title: Clerk and Recorder | Jefferson County Montana)
  • Phone: (406) 225-4020
  • Address: 102 S. Monroe St PO Box H Boulder, MT 59632
  • Hours: Monday - Friday 8:00 am - 12:00pm
  • Checked: September 24, 2026, the page answered.

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Deeds, land records and property values in Jefferson County

Two offices share property records. The recording office files deeds, mortgages, liens and the other documents that affect title to land in Jefferson County. The assessment office sets the taxable value of each parcel and usually offers a free parcel search by address or owner name.

Recorded documents: Clerk and Recorder

SearchSystems has not yet verified an online page for the Clerk and Recorder of Jefferson County.

Property values: Property Assessment Division

  • Website: jeffersoncounty-mt.gov/gis (page title: Geographic Information Services | Jefferson County Montana)
  • Phone: (406)225-4156
  • Address: 114 S Washington St PO Box H Boulder, MT 59632
  • Hours: Mon-Thurs 7:30 AM- 5:30 PM
  • Checked: October 11, 2026, the page answered.

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Birth, death and marriage records in Jefferson County

Certified copies of birth and death certificates for events in Jefferson County are issued by the office below. The Montana state vital records office also issues certified copies for any event in the state.

  • Website: jeffersoncounty-mt.gov/clerk_recorder (page title: Clerk and Recorder | Jefferson County Montana)
  • Phone: (406) 225-4020
  • Address: 102 S. Monroe St PO Box H Boulder, MT 59632
  • Hours: Monday - Friday 8:00 am - 12:00pm
  • Checked: September 24, 2026, the page answered.

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County Attorney for Jefferson County

The County Attorney is the office that prosecutes criminal cases in Jefferson County. The case files themselves are court records (above); the prosecutor's office handles victim services and questions about pending prosecutions.

  • Website: jeffersoncounty-mt.gov/county-attorney (page title: County Attorney | Jefferson County Montana)
  • Phone: (406) 225-4010
  • Address: 118 W Centennial Ave P.O. Box H Boulder MT 59632
  • Hours: Monday - Friday 8:00 am - 4:00 pm
  • Checked: September 24, 2026, the page answered.

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Public records requests to Jefferson County

Every state has a public records law that applies to county offices. A record that is not posted online is requested from the office that holds it. Many counties run one request page for every department; it is listed below when SearchSystems verified one for Jefferson County.

  • Website: jeffersoncounty-mt.gov/clerk_recorder (page title: Clerk and Recorder | Jefferson County Montana)
  • Phone: (406) 225-4020
  • Address: 102 S. Monroe St PO Box H Boulder, MT 59632
  • Hours: Monday - Friday 8:00 am - 12:00pm
  • Checked: September 24, 2026, the page answered.

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Statewide Montana sources

Some records are kept by the state rather than the county. These are the Montana state offices SearchSystems verified; each link opens the state office's own page.

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These links come from the SearchSystems directory for Jefferson County and were opened again on October 2, 2026. Each one still answers.

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Cities and towns in Jefferson County

Jefferson County has 2 incorporated cities and towns (2024 Census Bureau count, population in parentheses). City records such as council minutes, permits, business licenses and police reports are kept by each city; the records on this page are county records whatever the city.

  • Boulder (1,305)
  • Whitehall (1,116)

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Jefferson County Arrest Records

The Jefferson County arrest records guide names the agency that reports arrests to the FBI here and the 121 arrests it reported for 2025. It also says where a person arrested here is held, how to find out about an arrest and how to get a copy of the report.

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Jefferson County Records Guides

SearchSystems has nine more guides to Jefferson County, each written from the county's own offices and figures: Jefferson County warrants (who issues and serves them, where a person arrested on one is held, how to check for one), Jefferson County inmate search (the jail page of the Jefferson County Sheriff's Office, the jail numbers and who books people), Jefferson County criminal records (the court file, the Montana criminal history and the local arrest records), Jefferson County court records (which court hears what, the case search and who keeps the files), Jefferson County police reports (which agency holds a report and what the Montana Public Records Act requires), Jefferson County traffic tickets (which court takes the ticket, who writes them and the driving record), Jefferson County DUI (the DUI law, the arrest, the court case and the license case), Jefferson County divorce records (which court holds the file and how a certified copy is had) and Jefferson County property records (deeds, assessed values, permits and evictions).

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Frequently Asked Questions

Is this the official Jefferson County website?

No. SearchSystems.net is an independent public records directory, online since 1997. It links to the official offices listed above; SearchSystems does not hold records, charge for them or take requests.

How do I find out if someone is in jail in Jefferson County?

Use the jail or inmate page SearchSystems verified for Jefferson County at jeffersoncountysheriffmt.gov/detention-center, or call (406) 225-4078. Rosters usually show the people in custody now; after release, the case continues in the court records.

Where do I look up a court case in Jefferson County?

The court records page SearchSystems verified for Jefferson County is at jeffersoncounty-mt.gov/district-court, phone (406) 225-4042. A case number finds a case fastest; a name search returns every case with that name.

How do I get a birth or death certificate for Jefferson County?

From the office SearchSystems verified for Jefferson County vital records at jeffersoncounty-mt.gov/clerk_recorder, phone (406) 225-4020, or from the Montana state vital records office.

How do I request a public record from Jefferson County?

Through the records request page at jeffersoncounty-mt.gov/clerk_recorder. A record that is not covered there is requested from the office that holds it.