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Where am ILOCATED

Custer County, Montana

Custer County, Montana, has 12,034 residents (July 2025 estimate). Its county seat is Miles City. It uses Mountain Time and covers 3,783 sq mi (9,799 km²) of land.

BillingsMissoulaGreat Falls
Custer County in Montana
Fallon CountyPrairie CountyRosebud CountyMiles CityIsmay
Custer County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
12,034
Land area
3,783 sq mi (9,799 km²)
County seat or government
Miles City
Time zone
Mountain TimeUTC-07:00 in January; UTC-06:00 in July
Median household income
$70,605 ± $6,843
Median home value
$219,100 ± $8,904
Median rent, with utilities
$893 ± $101
Homes lived in by their owners
69.9% ± 2.7 points
County type
County
Metro or micro area
Outside any metro or micro area
Water area
9.89 sq mi (25.6 km²)
State
Montana
County code (FIPS)
30017
Coordinates (central point)
46.261414, -105.550352
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 Custer 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. 5930111,643 people
  2. 593491,025 people
  3. 59347323 people
  4. 59336220 people
  5. 59351202 people
  6. 59338136 people
  7. 5934535 people

7 ZIP Code areas overlap Custer 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

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

School districts in Custer County, largest first

  1. Custer County High School District11,961 people
  2. Miles City Elementary School District10,103 people
  3. Kircher Elementary School District880 people
  4. Kinsey Elementary School District507 people
  5. S Y Elementary School District248 people
  6. Trail Creek Elementary School District223 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.

Cities, towns and communities, largest first

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

  1. Miles City, Montana (city)8,407 people
  2. Ismay, Montana (town)1 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Prairie County, Montana38 mi north
  2. Rosebud County, Montana54 mi west
  3. Fallon County, Montana55 mi east
  4. Powder River County, Montana59 mi south
  5. Carter County, Montana72 mi southeast
  6. Garfield County, Montana98 mi northwest

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.