ZIP code · White Sulphur Springs · Montana · United States

ZIP code 59645 — White Sulphur Springs

ZIP code 59645 serves White Sulphur Springs, Montana.

Postal code
59645
Single source Value from one source, not cross-checked.
City
White Sulphur Springs
County
Meagher FIPS 30059
State
Montana
Country
United States
Coordinates
46.6332, -111.0506 — precision precise (locality)
View on OpenStreetMap
Population
1,703 (ZCTA, ACS 5-year)
Population density
1 / sq mi
Land area
1,630.5 sq mi (4,223 km²) (ZCTA, ACS 5-year)
Median household income
$59,231
Per-capita income
$36,481
Median age
58.6
Households
724
Housing units
1,077
Median home value
$283,100
Median gross rent
$875 / month
Congressional district
MT-2 (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
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.

Climate — monthly normals

Warmest month Jul (avg high 82°F), coldest Feb (avg low 13°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F333545536371828171564233
Avg low °F131321273542484739292013
Precip in0.50.30.71.42.12.51.41.21.00.90.40.5

NOAA 1991–2020 climate normals from the nearest station: WHITE SULPHUR SPRINGS #2 (9.4 mi) · NOAA NCEI

Places in ZIP 59645

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