Boulder is a city in Jefferson County, Montana, home to about 1,284 people across 1.1 square miles. Its ZIP code is 59632.
Homes sold for a median of $180 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Boulder; also Elkhorn
Each card is that ZIP code’s whole market, including any part outside Boulder. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Boulder’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Boise Air Terminal/Gowen Field (BOI)273 miles away |
|---|---|
| Closer regional airport | Bert Mooney Airport (BTM)26 miles away |
| Nearest city of 250,000+ | Seattle, WA492 miles away |
Straight-line distances from the center of Boulder; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Boulder had 1,201 residents in the 2020 census, down 8% since 2000.
It’s the 79th largest of 475 towns in Montana by population.
Jefferson County grew from 5,330 residents in 1900 to 12,085 in 2020.
Jefferson County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 12°F. About 10.9 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Boulder, MT weather station (about a mile away).
1,959 jobs at 342 businesses in Jefferson County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
13 doctors and other health care providers list an office in Boulder.
Nearest hospitals
Providers with an office here
| Dentists | 1 |
|---|---|
| Nurse practitioners and physician assistants | 4 |
| Mental health providers | 7 |
| Chiropractors | 1 |
| Pharmacies | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Grocery stores (1 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Boulder Elem, Jefferson H S. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Boulder Elementary SchoolBoulder | Pre-K–6 | 166 | Public | 0.5 mi |
| Boulder 7-8Boulder | 7–8 | 49 | Public | 0.5 mi |
| Jefferson High SchoolBoulder | 9–12 | 306 | Public | 0.3 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Elkhorn.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.