ZIP code · Hamilton · Montana · United States
ZIP code 59840 — Hamilton
ZIP code 59840 serves Hamilton, Montana.
- Postal code
- 59840Single source Value from one source, not cross-checked.
- City
- Hamilton
- County
- Ravalli FIPS 30081
- State
- Montana
- Country
- United States
- Coordinates
- 46.2395, -114.1679 — precision precise (locality)
View on OpenStreetMap - Population
- 14,775 (ZCTA, ACS 5-year)
- Population density
- 27 / sq mi
- Land area
- 537.4 sq mi (1,391.8 km²) (ZCTA, ACS 5-year)
- Median household income
- $64,493
- Per-capita income
- $37,625
- Median age
- 49.1
- Households
- 6,464
- Housing units
- 7,287
- Median home value
- $398,800
- Median gross rent
- $1,054 / month
- Congressional district
- MT-1 (119th Congress)
- USDA hardiness zone
- 5b (-15 to -10 °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 59840 with another ZIP · ZIPs within 25 miles · distance from 59840
Map of ZIP code 59840
Climate — monthly normals
Warmest month Jul (avg high 84°F), coldest Dec (avg low 18°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 35 | 39 | 49 | 56 | 66 | 73 | 84 | 82 | 72 | 57 | 43 | 34 |
| Avg low °F | 19 | 20 | 25 | 31 | 38 | 45 | 50 | 48 | 40 | 31 | 23 | 18 |
| Precip in | 1.0 | 1.2 | 1.0 | 1.1 | 1.5 | 1.6 | 0.8 | 0.8 | 0.8 | 0.9 | 1.4 | 1.3 |
NOAA 1991–2020 climate normals from the nearest station: HAMILTON (0.4 mi) · NOAA NCEI
Places in ZIP 59840
- 18 schools
- 1 colleges & universities
- 5 hospitals & clinics
- 6 doctors & dentists
- 3 pharmacies
- 8 supermarkets
- 44 restaurants & cafés
- 9 bars & pubs
- 18 parks
- 13 playgrounds
- 8 gyms & sports centres
- 1 libraries
- 2 post offices
- 29 places of worship
- 9 banks
- 10 gas stations
- 1 EV charging stations
- 5 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