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Where am ILOCATED

Big Horn County, Montana

Big Horn County, Montana, has 12,752 residents (July 2025 estimate). Its county seat is Hardin. It uses Mountain Time and covers 4,998 sq mi (12,944 km²) of land.

BillingsMissoulaGreat Falls
Big Horn County in Montana
Yellowstone CountyHardinCrow AgencyMuddyBusbyPryor
Big Horn County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
12,752
Land area
4,998 sq mi (12,944 km²)
County seat or government
Hardin
Time zone
Mountain TimeUTC-07:00 in January; UTC-06:00 in July
Median household income
$58,750 ± $2,019
Median home value
$143,400 ± $14,230
Median rent, with utilities
$697 ± $99
Homes lived in by their owners
66.7% ± 4.6 points
County type
County
Metro or micro area
Outside any metro or micro areaNext to: Sheridan, WY micro area and Billings, MT metro area
Water area
18.3 sq mi (47.4 km²)
State
Montana
County code (FIPS)
30003
Coordinates (central point)
45.407868, -107.518162
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Big Horn County

Time zoneLocal time and UTC offsetNext clock change
Mountain TimeAmerica/DenverUTC-07:00 in January; UTC-06:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 5910142,250 people
  2. 8280126,310 people
  3. 590345,008 people
  4. 590432,727 people
  5. 590372,336 people
  6. 590222,307 people
  7. 590501,338 people
  8. 590161,044 people
  9. 59089801 people
  10. 59038750 people
  11. 59066539 people
  12. 59031391 people
All 18
  1. 59024335 people
  2. 59010220 people
  3. 59064211 people
  4. 59035180 people
  5. 59075125 people
  6. 5902553 people

18 ZIP Code areas overlap Big Horn County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

Big Horn County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

School districts in Big Horn County, largest first

  1. Hardin Elementary School District9,951 people
  2. Hardin High School District8,514 people
  3. Lame Deer High School District4,936 people
  4. Lodge Grass High School District2,119 people
  5. Lodge Grass Elementary School District1,537 people
  6. Wyola Elementary School District811 people
  7. Plenty Coups High School District546 people
  8. Pryor Elementary School District546 people
  9. Spring Creek Elementary School District46 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Tribal areas in Big Horn County, largest first

  1. Crow Reservation and Off-Reservation Trust Land6,848 people
  2. Northern Cheyenne Indian Reservation and Off-Reservation Trust Land4,363 people

American Indian, Alaska Native and Native Hawaiian areas as the Census Bureau maps them, with at least 2% of their area here, water included. These lines don’t decide membership, jurisdiction or land status.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Hardin, Montana (city)3,742 people
  2. Crow Agency, Montana (CDP)2,192 people
  3. Muddy, Montana (CDP)724 people
  4. Busby, Montana (CDP)569 people
  5. Pryor, Montana (CDP)497 people
  6. Wyola, Montana (CDP)481 people
  7. Lodge Grass, Montana (town)429 people
  8. Fort Smith, Montana (CDP)78 people
  9. St. Xavier, Montana (CDP)55 people
  10. Forty Mile Colony, Montana (CDP)0 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Yellowstone County, Montana52 mi northwest
  2. Sheridan County, Wyoming53 mi southeast
  3. Treasure County, Montana58 mi north
  4. Big Horn County, Wyoming65 mi south
  5. Rosebud County, Montana67 mi northeast
  6. Carbon County, Montana74 mi west
  7. Powder River County, Montana95 mi east

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.