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Last reviewed: June 04, 2026 · Methodology: all Big Horn County record-source URLs verified against the official local and Montana state publishers on the review date. 4 primary .gov / official sources cited below.

Big Horn County — Key Numbers (2026)

Population, demographics, and county-seat data for Big Horn County, Montana — verified against U.S. Census 2024 estimates.
12,796
Population
Census estimate
3,622
Households
Census estimate
$52,463
Median income
Annual household
$159,700
Median home value
Census ACS
Hardin
County seat
In Montana
Big Horn County Records Availability Map
Criminal records
see state portal
Court records
2 sources
Wants & warrants
see state portal
Property records
1 source
Vital records
see state portal
Voter records
see state portal
Professional licenses
see state portal
Recorded documents
see state portal
Count of verified official sources per record type. Multiple sources   One source   Use state portal

Big Horn County Records at a Glance

Record typeBig Horn County verified sources
Court recordsMontana Court Locator
Montana District Courts
Criminal recordsNo verified source — see Big Horn County state portal below
Wants & warrantsNo verified source — see Big Horn County state portal below
Property recordsProperty Record Card - Montana Online Services
Vital recordsNo verified source — see Big Horn County state portal below
Voter recordsNo verified source — see Big Horn County state portal below
Professional licensesNo verified source — see Big Horn County state portal below
Recorded documentsNo verified source — see Big Horn County state portal below
Big Horn County — Verified Record Sources by Type (2026)
Court records2Criminal records0Wants & warrants0Property records1Vital records0Voter records0Licenses0Recorded docs0
Count of officially verified .gov / .us record sources cataloged for Big Horn County. Data verified June 04, 2026.

What Changed in 2026 — Big Horn County Records

2026
Big Horn County official government portal active
The official Big Horn County government website at www.bighorncountymt.gov continues to serve as the canonical local source.
2026
Big Horn County court records portal verified
State court system links for Big Horn County verified against the Montana judiciary portal in 2026.
2026
Big Horn County property records online
Big Horn County property assessment and recorder office online portal active in 2026.
2026
FBI Identity History Summary (federal complement)
For records that may exist outside Montana, the FBI Identity History Summary at fbi.gov complements all county-level state records.

The 4-Step Big Horn County Records Pathway

1
Step 1 — Start at the Big Horn County clerk/courthouse
For most local records (court cases, property deeds, marriage licenses), the Big Horn County clerk's office is the first stop.
2
Step 2 — Use the Montana statewide systems
Criminal background, court case search, voter registration, and professional licensing are all run at the Montana state level — not by the county.
3
Step 3 — Federal sources for federal records
Federal court cases (PACER), federal tax liens (IRS), military records (NPRC), and immigration data (ICE) are all federal — not held by the county.
4
Step 4 — Cross-check before relying on data
Most county portals lag 24-48 hours behind the courthouse. For time-sensitive verification, call the clerk directly.

Five Things People Get Wrong About Big Horn County Records

❌ Myth: "Big Horn County maintains all criminal records."
✓ Truth: False. Criminal records for Big Horn County are held by the Montana state repository, NOT the county. The county sheriff has only the local arrest log.
❌ Myth: "Records sealed in Big Horn County are gone everywhere."
✓ Truth: False. Sealing removes records from public search but they still exist at the courthouse and may appear in FBI records (Identity History Summary).
❌ Myth: "Free 'instant background' sites have Big Horn County data."
✓ Truth: False. Only the official Montana state repository has verified, current Big Horn County data. Free sites often have stale data.
❌ Myth: "The Big Horn County assessor's value is what I'll sell my home for."
✓ Truth: False. The Big Horn County assessor's value is for property tax purposes only — usually below market value.
❌ Myth: "All county records older than 50 years are public."
✓ Truth: Partially false. Public-records rules vary by record type AND state. Court records and deeds are usually older-public; vital records remain restricted longer (often 75-125 years).

Primary Sources (All Verified)

Related — Big Horn County & Montana Records

For records not specific to Big Horn County, use Montana's statewide system or the national hub.
📍 Montana statewide record systems:
🇺🇸 National hubs:
Related Public Records
Other counties in Montana: Beaverhead · Blaine · Broadwater · Carbon · Carter

About Big Horn County, Montana

Big Horn County is located in south-central Montana. The county seat is Hardin (official site: http://www.bighorncountymt.gov/).

  • Population: 12,796
  • Households: 3,622
  • Median household income: $52,463
  • Median home value: $159,700
  • Below poverty line: 25.7%
  • Land area: 4,997.8 sq mi
  • Population density: 2.6 people / sq mi
  • Public libraries indexed: 1
  • NCES schools indexed: 15
CT
Montana Court Locator
Official Free
To find Address and Phone Number of the Montana Court you are looking for: Simply Select the County or City from the drop-down to see a list of Courts that resides in that Judicial district. By County · Select a County · Beaverhead County · Big Horn County ·
CT
Montana District Courts
Criminal & Court Records
.gov

Statewide Montana courts.

courts.mt.gov
PR
Property Record Card - Montana Online Services
Official Free
To access your property information, enter a property number, assessment code, name, or address in the search box above. TIP: After entering a search term, select a county to improve search speed
Montana Sexual Violent Offender Registry
Official Free
Beaverhead County District Court (April 2021) Big Horn County District Court (September 2019) Broadwater County District Court (January 2022) Butte-Silver Bow County District Court (July 2023) Carbon County District Court (August 2021) Carter County District Court (April 2022) Cascade County District Court (February 2023) Chouteau County District Court (February 2021) Custer County District Court (February 2025) Daniels County District Court (March 2022) Dawson County District Court (October 2020) Deer Lodge County District Court (April 2024) Fallon County District Court (September 2019) Fergu
VR
Candidate Filing - Montana Secretary of State
Official Free
The following list is being displayed in real time and is the most up-to-date information processed by the Secretary of State's Office · Political Party Legend: AD = American Delta C = Constitution CO = Constitutional D = Democrat G = Green I = Independent L = Libertarian NL = Natural Law ...
LC
DLI Record Search
Official Free
DLI RECORD SEARCH · Home Help License Search Permit Search Underground Utility Incident Report Search Continuing Education Course Search Continuing Education Provider Search · Continuing Education Search · Course Search Provider Search · License Search
BZ
Big Horn County
Official Free
Field notes are the narrative record of the cadastral survey . They are written in tabular format and contain the detailed descriptions of entire survey process including the instrumentation and procedures utilized, calling all physical evidence evaluated in the survey process, and listing all ...
BZ
Staff Directory • Big Horn County, MT • CivicEngage
Official Free
Staff Directory · Accounting · Airport · Ambulance · Big Horn County Commissioners · Clerk & Recorder · Council on Aging · Hardin · Lodge Grass · County Attorney · Detention Center · Disaster & Emergency Services · Dispatch · District Court · Elections Department ·
BZ
Commercial Registered Agent List KALISPELL, MT 59901, UNITED STATES
Business, Voter & Other
.gov

Montana SOS business search.

biz.sosmt.gov

Frequently Asked Questions

How do I look up court cases in Big Horn County?
Big Horn County court cases are searchable through the Montana Court Locator portal: https://courts.mt.gov/CourtLocator/. Montana also operates a state-level case lookup through the Montana Courts system. For federal matters, see PACER.
Are Montana marriage records public?
Marriage records in Montana are generally public — anyone can verify that a marriage occurred and request a non-certified copy. Certified copies (needed for legal purposes like name changes or immigration) may be restricted to the spouses, immediate family, or those with a court order.
Can I find out if someone is divorced in Montana?
Yes. Search the court case index for the person's name in the county where they lived. Most Montana counties offer free online case-search portals. The state vital records office also issues divorce verifications for a fee.
What's the difference between a court record and a criminal record in Montana?
A court record shows everything filed in a specific case — pleadings, motions, judgments. A criminal record (rap sheet) is a person-centric history from the Montana Department of Justice that aggregates arrests and dispositions across all courts in Montana. Court records are searched by case; criminal records by person.