ZIP code · Ismay · Montana · United States

ZIP code 59336 — Ismay

ZIP code 59336 serves Ismay, Montana.

Postal code
59336
Single source Value from one source, not cross-checked.
City
Ismay
County
Custer FIPS 30017
State
Montana
Country
United States
Coordinates
46.4132, -105.2091 — precision precise (locality)
View on OpenStreetMap
Population
202 (ZCTA, ACS 5-year)
Population density
0 / sq mi
Land area
1,047 sq mi (2,711.7 km²) (ZCTA, ACS 5-year)
Median household income
$62,500
Per-capita income
$39,349
Median age
36.8
Households
72
Housing units
103
Median home value
$276,900
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 91°F), coldest Jan (avg low 6°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F333750617181919179624635
Avg low °F6112131415056534330189
Precip in0.40.50.71.62.92.31.81.01.31.00.50.4

NOAA 1991–2020 climate normals from the nearest station: MIZPAH 4 NNW (9.6 mi) · NOAA NCEI

Places in ZIP 59336

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