ZIP code · Chinook · Montana · United States
ZIP code 59523 — Chinook
ZIP code 59523 serves Chinook, Montana.
- Postal code
- 59523Single source Value from one source, not cross-checked.
- City
- Chinook
- County
- Blaine FIPS 30005
- State
- Montana
- Country
- United States
- Coordinates
- 48.5799, -109.2225 — precision precise (locality)
View on OpenStreetMap - Population
- 2,281 (ZCTA, ACS 5-year)
- Population density
- 1 / sq mi
- Land area
- 1,534.6 sq mi (3,974.6 km²) (ZCTA, ACS 5-year)
- Median household income
- $74,107
- Per-capita income
- $35,705
- Median age
- 40.4
- Households
- 913
- Housing units
- 1,131
- Median home value
- $200,700
- Median gross rent
- $739 / month
- Congressional district
- MT-2 (119th Congress)
- USDA hardiness zone
- 3b (-35 to -30 °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
- 406Telephone 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 59523 with another ZIP · ZIPs within 25 miles · distance from 59523
Map of ZIP code 59523
Climate — monthly normals
Warmest month Jul (avg high 84°F), coldest Jan (avg low 4°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 27 | 31 | 43 | 57 | 67 | 75 | 84 | 83 | 72 | 57 | 41 | 31 |
| Avg low °F | 4 | 7 | 18 | 29 | 40 | 49 | 54 | 52 | 41 | 29 | 17 | 8 |
| Precip in | 0.5 | 0.4 | 0.6 | 1.0 | 2.4 | 2.9 | 1.6 | 1.1 | 1.0 | 0.9 | 0.7 | 0.4 |
NOAA 1991–2020 climate normals from the nearest station: CHINOOK (0.6 mi) · NOAA NCEI
Places in ZIP 59523
- 5 schools
- 1 hospitals & clinics
- 1 bars & pubs
- 6 parks
- 1 libraries
- 1 post offices
- 12 places of worship
- 1 banks
- 2 gas stations
- 3 police & fire stations
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