ZIP code · Hardin · Montana · United States

ZIP code 59034 — Hardin

ZIP code 59034 serves Hardin, Montana.

Postal code
59034
Single source Value from one source, not cross-checked.
City
Hardin
County
Big Horn FIPS 30003
State
Montana
Country
United States
Coordinates
45.7498, -107.6075 — precision precise (locality)
View on OpenStreetMap
Population
4,972 (ZCTA, ACS 5-year)
Population density
6 / sq mi
Land area
791.3 sq mi (2,049.6 km²) (ZCTA, ACS 5-year)
Median household income
$59,559
Per-capita income
$26,292
Median age
34.9
Households
1,762
Housing units
1,987
Median home value
$178,200
Median gross rent
$723 / 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 91°F), coldest Jan (avg low 11°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F364153627181919079644838
Avg low °F111523324150565344332213
Precip in0.50.60.91.52.51.91.30.91.41.40.50.5

NOAA 1991–2020 climate normals from the nearest station: HARDIN (1.2 mi) · NOAA NCEI

Places in ZIP 59034

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