Simms is a community in Cascade County, Montana, home to about 334 people across 7.6 square miles. Its ZIP code is 59477.
Homes sold for a median of $210 per square foot in the three months ending August 2026, a balanced market.
Each card is that ZIP code’s whole market, including any part outside Simms. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Simms’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)263 miles away |
|---|---|
| Closer regional airport | Great Falls International Airport (GTF)24 miles away |
| Nearest city of 250,000+ | Seattle, WA488 miles away |
Straight-line distances from the center of Simms; 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.
Simms had 361 residents in the 2020 census, down 3% since 2000.
It’s the 188th 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 (7 miles 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, Simms H S. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Sun River Middle SchoolSimms | 6–8 | 55 | Public | 2.0 mi |
| Simms High SchoolSimms | 9–12 | 91 | Public | 2.0 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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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.