ZIP code · Gallatin Gateway · Montana · United States

ZIP code 59730 — Gallatin Gateway

ZIP code 59730 serves Gallatin Gateway, Montana.

Postal code
59730
Single source Value from one source, not cross-checked.
City
Gallatin Gateway
County
Gallatin FIPS 30031
State
Montana
Country
United States
Coordinates
45.3390, -111.2485 — precision precise (locality)
View on OpenStreetMap
Population
2,367 (ZCTA, ACS 5-year)
Population density
3 / sq mi
Land area
686.1 sq mi (1,777 km²) (ZCTA, ACS 5-year)
Median household income
$85,849
Per-capita income
$50,377
Median age
39.8
Households
954
Housing units
1,337
Median home value
$817,600
Median gross rent
$1,469 / month
Congressional district
MT-1 (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 78°F), coldest Jan (avg low 9°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F303442485867787768533728
Avg low °F991723303641393325169
Precip in1.81.51.92.42.83.21.31.61.71.81.61.7

NOAA 1991–2020 climate normals from the nearest station: BIG SKY 2WNW (5.7 mi) · NOAA NCEI

Places in ZIP 59730

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