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Custer County, MT
2 cities and towns and 4 ZIP codes in Custer County, Montana.
Population
11,961
Land area
3,783sq mi
People per sq mi
3
ZIP codes
4
Cities and towns in Custer County
Custer County at a glance
- Custer County is 59% less dense than Montana as a whole.
- The median household income is $70,605, close to the Montana median.
- A typical owner-occupied home is valued at $219,100 (42% below Montana) and median rent is $893 a month.
- The biggest population centers are Miles City (8,407) and Ismay (1).
Local data for Custer County, MT
Counts from official public data
- Hospitals1
- Emergency Rooms1
- Nursing Homes1
- Schools15
- Colleges1
- Libraries1
- Banks5
- Post Offices3
- Parks5
- Grocery Stores3
- Restaurants40
- Affordable Housing2
- Home Health Agencies1
- Hospice Care1
- Dialysis Centers1
- Community Health Centers3
- Mental Health & Addiction Treatment2
- Private Schools3
- Community Colleges & Trade Schools1
- Toxic Release Facilities1
- Historic Places12
Housing and community stats
Custer County, MT, American Community Survey 2020-2024
Median household income
$70,605
Poverty rate
11.3%
Median home value
$219,100
Prices +0.9% in a year
Median rent
$893/mo
Homeownership
69.9%
Bachelor's or higher
27.0%
Median age
42.7
Average commute
13.0 min
Largest reported origins and ancestries: German Americans (3,212), Irish Americans (1,555), Norwegian Americans (1,016).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
2.5%
Aug 2026, 0.0 pts in a year
Average annual pay
$52,184
5,261 jobs, 2025
Income per person
$58,945
BEA, 2024
Federal spending
$85.7M
FY 2026, $7,222 per person
PPP loans
$28.06M
647 loans, 3,455 jobs reported
Campaign donations
$61.06K
Itemized, 2026 cycle
How people get to work
Custer County, MT, workers 16 and older. American Community Survey 5-year estimates
- Drove alone71.4%
- Carpooled16.6%
- Public transit0.3%
- Walked6.0%
- Bicycle0.1%
- Taxi, ride-hailing, motorcycle or other0.6%
- Worked from home5.0%
Average one-way commute: 13.0 minutes for people who do not work from home.
Environment and hazard risk
Custer County, MT, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: cold wave
Storm events since 1996
557
Most often hail
Flood insurance policies
687
11.7% of homes, county
July high / Jan low
91° / 6°F
14.5 inches of rain a year
Hazards, floods and storm historyCheck a flood zone12 historic places
Health statistics
Share of adults in Custer County, MT, CDC PLACES estimates
Obesity
32.6%
U.S. 33.3% -0.7 pts
Diabetes
10.5%
U.S. 12.1% -1.6 pts
Smoking
14.5%
U.S. 12.8% +1.7 pts
Uninsured (18-64)
9.1%
U.S. 11.1% -2.0 pts
Cities, towns and ZIP codes in Custer County
Population shown
Frequently asked questions
- What is the largest city in Custer County, MT?
- Miles City is the largest city or town in Custer County, with about 8,407 residents.
- How many ZIP codes are in Custer County?
- Custer County includes 4 ZIP Code Tabulation Areas, including 59301, 59336, 59338, 59345.
- What is the population of Custer County, MT?
- About 11,961 people live in Custer County, based on American Community Survey 5-year estimates.
- What counties border Custer County?
- Custer County borders Rosebud County, Fallon County, Powder River County, Carter County, Prairie County, Garfield County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023