ZIP code · Culbertson · Montana · United States

ZIP code 59218 — Culbertson

ZIP code 59218 serves Culbertson, Montana.

Postal code
59218
Single source Value from one source, not cross-checked.
City
Culbertson
County
Roosevelt FIPS 30085
State
Montana
Country
United States
Coordinates
48.1495, -104.5132 — precision precise (locality)
View on OpenStreetMap
Population
952 (ZCTA, ACS 5-year)
Population density
2 / sq mi
Land area
391.1 sq mi (1,012.9 km²) (ZCTA, ACS 5-year)
Median household income
$95,368
Per-capita income
$36,803
Median age
41
Households
337
Housing units
475
Median home value
$256,600
Median gross rent
$961 / month
Congressional district
MT-2 (119th Congress)
USDA hardiness zone
4a (-30 to -25 °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 87°F), coldest Jan (avg low 2°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F243044597179878776594128
Avg low °F271830405056544431187
Precip in0.40.30.50.92.32.92.71.41.30.90.50.4

NOAA 1991–2020 climate normals from the nearest station: CULBERTSON (0.2 mi) · NOAA NCEI

Places in ZIP 59218

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