ZIP code · Garrison · Montana · United States
ZIP code 59731 — Garrison
ZIP code 59731 serves Garrison, Montana.
- Postal code
- 59731Single source Value from one source, not cross-checked.
- City
- Garrison
- County
- Powell FIPS 30077
- State
- Montana
- Country
- United States
- Coordinates
- 46.5948, -112.7756 — precision precise (locality)
View on OpenStreetMap - Population
- 215 (ZCTA, ACS 5-year)
- Population density
- 2 / sq mi
- Land area
- 131.1 sq mi (339.5 km²) (ZCTA, ACS 5-year)
- Median household income
- $58,750
- Per-capita income
- $27,447
- Median age
- 36.8
- Households
- 73
- Housing units
- 77
- Median home value
- $350,000
- Congressional district
- MT-1 (119th Congress)
- USDA hardiness zone
- 4b (-25 to -20 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Denver (UTC−7 / UTC−6 DST)
- Area code
- 406 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 59731 with another ZIP · ZIPs within 25 miles · distance from 59731
Map of ZIP code 59731
Climate — monthly normals
Warmest month Aug (avg high 79°F), coldest Dec (avg low 11°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 33 | 36 | 44 | 53 | 62 | 69 | 79 | 79 | 70 | 55 | 40 | 31 |
| Avg low °F | 11 | 13 | 19 | 26 | 34 | 40 | 44 | 42 | 35 | 26 | 16 | 11 |
| Precip in | 0.5 | 0.7 | 1.3 | 1.1 | 2.2 | 2.7 | 1.5 | 1.3 | 1.4 | 1.0 | 0.5 | 0.5 |
NOAA 1991–2020 climate normals from the nearest station: DEER LODGE 3 W (14.1 mi) · NOAA NCEI
Places in ZIP 59731
- 1 schools
- 1 parks
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page