County ProfileMT
Custer County
Population: 11,867 · 4 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
11,867
People
Median age
42.7
Housing
Total households
5,038
Income
Median household income
$70,605
Housing
Total housing units
5,784
Employment
Employment rate
63.2%
Education
Bachelor’s degree or higher
27%
Healthcare
Insured population
92.3%
County details
Local time 01:16:03(MT)| Name | Custer |
|---|---|
| Total ZIP codes | 4total |
| ZIP codes (by type) | 4 Standard |
| Area code | 406 |
| Timezone | Mountain Time (MT) |
| Coordinates | 46.2614136, -105.5503521 |
| Land area | 3,783.3 sq miles(9,798.7 km²) |
Map of Custer county, Montana with ZIP codes
Cities and Communities in Custer County
Compare the largest cities in Custer County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Miles City | 8,354 | $67,727 | 1ZIPs |
| Kinsey | 162 | — | 1ZIPs |
| Powderville | 89 | — | 1ZIPs |
| Ismay | 17 | — | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Custer County
Review the most populated postal areas across Custer County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 59301 | Miles City | $71,332 | 11,509 |
| 59336 | Ismay | $64,375 | 253 |
| 59338 | Kinsey | $69,375 | 162 |
| 59345 | Powderville | $68,125 | 89 |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS