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Boulder, MT
City in Jefferson County, Montana.
Population
1,284
Land area
1.1sq mi
People per sq mi
1,142
ZIP codes
0
Boulder and its ZIP codes
Boulder at a glance
- Boulder is about 149 times as dense as Montana as a whole.
- By population, it ranks 79th among 475 cities and towns in Montana.
- The median household income is $72,500, close to the Montana median.
- A typical owner-occupied home is valued at $212,300 (44% below Montana) and median rent is $928 a month.
Local data for Boulder, MT
Counts from official public data
Housing and community stats
Boulder, MT, American Community Survey 2020-2024
Median household income
$72,500
Poverty rate
3.8%
Median home value
$212,300
Median rent
$928/mo
Homeownership
73.3%
Bachelor's or higher
22.1%
Median age
41.4
Average commute
24.9 min
Largest reported origins and ancestries: German Americans (361), Irish Americans (161), Norwegian Americans (101).
Economy and federal money
Jobs, pay, income and spending are for Jefferson County. PPP loans are for Boulder.
Unemployment rate
2.6%
Aug 2026, -0.2 pts in a year
Average annual pay
$57,412
2,784 jobs, 2025
Income per person
$68,296
BEA, 2024
Federal spending
$140M
FY 2026, $11,544 per person
How people get to work
Boulder, MT, workers 16 and older. American Community Survey 5-year estimates
- Drove alone63.9%
- Carpooled16.2%
- Public transit0.0%
- Walked9.0%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other3.9%
- Worked from home7.0%
Average one-way commute: 24.9 minutes for people who do not work from home.
Environment and hazard risk
Boulder, MT, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: landslide
Storm events since 1996
148
Countywide, mostly hail
Flood insurance policies
22
0.3% of homes, county
July high / Jan low
83° / 12°F
10.8 inches of rain a year
Hazards, floods and storm historyCheck a flood zone1 historic places
Health statistics
Share of adults in Boulder, MT, CDC PLACES estimates
Obesity
33.3%
U.S. 33.3% about the same
Diabetes
10.5%
U.S. 12.1% -1.6 pts
Smoking
13.7%
U.S. 12.8% +0.9 pts
Uninsured (18-64)
8.8%
U.S. 11.1% -2.3 pts
Cities near Boulder
| Name | Distance | Land area (sq mi) |
|---|---|---|
| BasinCensus-designated place | 8.7 mi | 12.7 |
| ElkhornCensus-designated place | 8.8 mi | 6.7 |
| Jefferson CityCensus-designated place | 11 mi | 23.2 |
| ClancyCensus-designated place | 16 mi | 39.2 |
| RiminiCensus-designated place | 18 mi | 0.3 |
| UnionvilleCensus-designated place | 21 mi | 1.3 |
| Montana CityCensus-designated place | 21 mi | 34.1 |
| South HillsCensus-designated place | 23 mi | 5.9 |
| RadersburgCensus-designated place | 24 mi | 0.3 |
| WalkervilleTown | 24 mi | 2.2 |
| Helena West SideCensus-designated place | 25 mi | 15.1 |
| HelenaCity | 25 mi | 17.2 |
| WhitehallTown | 25 mi | 0.7 |
| East HelenaCity | 26 mi | 4.1 |
| Spokane CreekCensus-designated place | 27 mi | 17.3 |
| WinstonCensus-designated place | 27 mi | 5.2 |
Frequently asked questions
- What county is Boulder, MT in?
- Boulder is in Jefferson County, Montana.
- What is the population of Boulder, MT?
- About 1,284 people live in Boulder, based on American Community Survey 5-year estimates.
- What cities are near Boulder?
- Nearby places include Basin (8.7 mi), Elkhorn (8.8 mi), Jefferson City (11 mi), Clancy (16 mi), Rimini (18 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023