ZIP code · Fort Peck · Montana · United States

ZIP code 59223 — Fort Peck

ZIP code 59223 serves Fort Peck, Montana.

Postal code
59223
Single source Value from one source, not cross-checked.
City
Fort Peck
County
Valley FIPS 30105
State
Montana
Country
United States
Coordinates
48.0089, -106.4486 — precision precise (locality)
View on OpenStreetMap
Population
25 (ZCTA, ACS 5-year)
Population density
0 / sq mi
Land area
300.9 sq mi (779.4 km²) (ZCTA, ACS 5-year)
Median household income
$150,313
Per-capita income
$85,856
Median age
70.9
Households
21
Housing units
180
Median home value
$443,300
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 89°F), coldest Jan (avg low 8°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F283346607180898877614432
Avg low °F81222344453595748372413
Precip in0.30.30.40.92.52.72.41.41.10.90.40.3

NOAA 1991–2020 climate normals from the nearest station: FT PECK PWR PLT (1.7 mi) · NOAA NCEI

Places in ZIP 59223

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