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Musselshell County, MT
7 cities and towns and 3 ZIP codes in Musselshell County, Montana.
Population
5,152
Land area
1,869sq mi
People per sq mi
3
ZIP codes
3
Cities and towns in Musselshell County
Musselshell County at a glance
- Musselshell County is 64% less dense than Montana as a whole.
- The median household income is $58,920, 19% below the Montana median of $72,509.
- A typical owner-occupied home is valued at $235,000 (37% below Montana) and median rent is $1,138 a month.
- Its largest cities are Roundup (2,003), Klein (340) and Camp Three (139).
Local data for Musselshell County, MT
Counts from official public data
Housing and community stats
Musselshell County, MT, American Community Survey 2020-2024
Median household income
$58,920
Poverty rate
17.0%
Median home value
$235,000
Prices +4.4% in a year
Median rent
$1,138/mo
Homeownership
85.1%
Bachelor's or higher
22.4%
Median age
51.3
Average commute
25.3 min
Largest reported origins and ancestries: German Americans (1,001), Irish Americans (588), Norwegian Americans (210).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
4.2%
Aug 2026, -0.8 pts in a year
Average annual pay
$62,030
1,274 jobs, 2025
Income per person
$52,084
BEA, 2024
Federal spending
$53.24M
FY 2026, $11,255 per person
PPP loans
$5.48M
201 loans, 703 jobs reported
Campaign donations
$13.87K
Itemized, 2026 cycle
How people get to work
Musselshell County, MT, workers 16 and older. American Community Survey 5-year estimates
- Drove alone59.1%
- Carpooled8.8%
- Public transit0.0%
- Walked5.8%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other3.5%
- Worked from home22.8%
Average one-way commute: 25.3 minutes for people who do not work from home.
Environment and hazard risk
Musselshell County, MT, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: wildfire
Storm events since 1996
482
Most often hail
Flood insurance policies
15
0.5% of homes, county
July high / Jan low
89° / 13°F
14.9 inches of rain a year
Hazards, floods and storm historyCheck a flood zone2 historic places
Health statistics
Share of adults in Musselshell County, MT, CDC PLACES estimates
Obesity
35.6%
U.S. 33.3% +2.3 pts
Diabetes
12.7%
U.S. 12.1% +0.6 pts
Smoking
15.4%
U.S. 12.8% +2.6 pts
Uninsured (18-64)
10.4%
U.S. 11.1% -0.7 pts
Cities, towns and ZIP codes in Musselshell County
Population shown
Frequently asked questions
- What is the largest city in Musselshell County, MT?
- Roundup is the largest city or town in Musselshell County, with about 2,003 residents.
- How many ZIP codes are in Musselshell County?
- Musselshell County includes 3 ZIP Code Tabulation Areas, including 59054, 59059, 59072.
- What is the population of Musselshell County, MT?
- About 5,152 people live in Musselshell County, based on American Community Survey 5-year estimates.
- What counties border Musselshell County?
- Musselshell County borders Yellowstone County, Fergus County, Rosebud County, Golden Valley County, Petroleum County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023