Sun River is a community in Cascade County, Montana, home to about 72 people across 1.9 square miles. Its ZIP code is 59483.
Homes sold for a median of $251 per square foot in the three months ending August 2026, a seller’s market.
Mostly Sun River; also Fort Shaw and Cascade Colony
Each card is that ZIP code’s whole market, including any part outside Sun River. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Sun River’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Spokane International Airport (GEG)271 miles away |
|---|---|
| Closer regional airport | Great Falls International Airport (GTF)16 miles away |
| Nearest city of 250,000+ | Seattle, WA495 miles away |
Straight-line distances from the center of Sun River; 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.
Sun River had 95 residents in the 2020 census, down 27% since 2000.
It’s the 358th largest of 475 towns in Montana by population.
Cascade County grew from 25,777 residents in 1900 to 84,414 in 2020.
Cascade 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 13°F. About 13.4 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Sun Rvr 4 S, MT weather station (about a mile away).
30,050 jobs at 2,472 businesses in Cascade County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2022 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Public schools here are run by Sun River Valley Elem. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Cascade Colony SchoolSun River | Pre-K–8 | 11 | Public | 5.3 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 Fort Shaw and Cascade Colony.
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.