Big Sandy is a town in Chouteau County, Montana, home to about 784 people across 0.5 square miles. Its ZIP code is 59520.
Homes sold for a median of $130 per square foot in the three months ending August 2026, a buyer’s market.
Each card is that ZIP code’s whole market, including any part outside Big Sandy. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Big Sandy’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Big Sandy well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Spokane International Airport (GEG)347 miles away |
|---|---|
| Closer regional airport | Havre City County Airport (HVR)31 miles away |
| Nearest city of 250,000+ | Seattle, WA570 miles away |
Straight-line distances from the center of Big Sandy; 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.
Big Sandy had 605 residents in the 2020 census, down 14% since 2000.
It’s the 120th largest of 475 towns in Montana by population.
Chouteau County grew from 10,966 residents in 1900 to 5,895 in 2020.
Chouteau County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 86°F in summer, and winter lows average 10°F. About 13.4 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Big Sandy, MT weather station (about a mile away).
772 jobs at 153 businesses in Chouteau County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
4 doctors and other health care providers list an office in Big Sandy.
Nearest hospitals
Providers with an office here
| Nurse practitioners and physician assistants | 4 |
|---|---|
| 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.
Pharmacies
Libraries
Museums
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 Big Sandy K-12. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| F E Miley SchoolBig Sandy | Pre-K–6 | 94 | Public | 2.3 mi |
| Big Sandy 7-8Big Sandy | 7–8 | 28 | Public | 2.7 mi |
| Big Sandy High SchoolBig Sandy | 9–12 | 59 | Public | 2.7 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.