ZIP code · Billings · Montana · United States

ZIP code 59101 — Billings

ZIP code 59101 serves Billings, Montana.

Postal code
59101
Single source Value from one source, not cross-checked.
City
Billings
County
Yellowstone FIPS 30111
State
Montana
Country
United States
Coordinates
45.7745, -108.5005 — precision precise (locality)
View on OpenStreetMap
Population
41,797 (ZCTA, ACS 5-year)
Population density
71 / sq mi
Land area
590.8 sq mi (1,530.1 km²) (ZCTA, ACS 5-year)
Median household income
$58,165
Per-capita income
$33,384
Median age
36.5
Households
17,546
Housing units
18,864
Median home value
$243,000
Median gross rent
$930 / month
Congressional district
MT-2 (119th Congress)
USDA hardiness zone
5a (-20 to -15 °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 86°F), coldest Jan (avg low 14°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F374151596877868575604737
Avg low °F141725334250565445342416
Precip in0.60.61.01.92.52.51.30.81.51.60.70.6

NOAA 1991–2020 climate normals from the nearest station: BILLINGS WTP (0.9 mi) · NOAA NCEI

Places in ZIP 59101

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