ZIP code · Thompson Falls · Montana · United States

ZIP code 59873 — Thompson Falls

ZIP code 59873 serves Thompson Falls, Montana.

Postal code
59873
Single source Value from one source, not cross-checked.
City
Thompson Falls
County
Sanders FIPS 30089
State
Montana
Country
United States
Coordinates
47.6016, -115.3602 — precision precise (locality)
View on OpenStreetMap
Population
2,983 (ZCTA, ACS 5-year)
Population density
4 / sq mi
Land area
769.4 sq mi (1,992.6 km²) (ZCTA, ACS 5-year)
Median household income
$54,176
Per-capita income
$29,626
Median age
59.9
Households
1,301
Housing units
1,776
Median home value
$244,500
Median gross rent
$575 / month
Congressional district
MT-1 (119th Congress)
USDA hardiness zone
6a (-10 to -5 °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 24°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F344049586875868675584133
Avg low °F242529344148535244362925
Precip in2.31.92.01.62.12.20.90.91.02.22.62.3

NOAA 1991–2020 climate normals from the nearest station: THOMPSON FALLS PH (0.6 mi) · NOAA NCEI

Places in ZIP 59873

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