Custer   County MT United States

County FIPS 30017
Largest City Miles City
State Montana
Latitude 46.2527
Longitude -105.5717
Population 11,961
Density 3.16 people per square mile
Time Zone America/Denver
  • All demographic data comes from the 2024 American Community Survey (5-year study).
  • Learn more about each field.
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Household Income

Median household: $70,605
Median individual: $35,674

Race

Mode: 90.4% White

Gender

 50.3% male 

Rent

  $893 / month  

Median house value: $215,594.0

Age

Median: 42.7 years old

Education

With at least college degree: 27.0%
With STEM degree: 39.9%

Marital Status

 52.8% married 

Never married: 25.4%

Labor Force Participation

 65.5% working 

Unemployed: 3.4%

Average Family Size

 2.77 people 

Commute Time

 13.0 minutes 

Health Care

 7.7% uninsured 

Poverty

 11.3%

All data comes from the SimpleMaps US Counties Database, 2026.

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