ZIP code · Post Falls · Idaho · United States

ZIP code 83854 — Post Falls

ZIP code 83854 serves Post Falls, Idaho.

Postal code
83854
Single source Value from one source, not cross-checked.
City
Post Falls
County
Kootenai FIPS 16055
State
Idaho
Country
United States
Coordinates
47.7205, -116.9353 — precision precise (locality)
View on OpenStreetMap
Population
53,152 (ZCTA, ACS 5-year)
Population density
685 / sq mi
Land area
77.6 sq mi (200.9 km²) (ZCTA, ACS 5-year)
Median household income
$72,820
Per-capita income
$32,969
Median age
36
Households
19,423
Housing units
20,440
Median home value
$433,700
Median gross rent
$1,311 / month
Congressional district
ID-1 (119th Congress)
USDA hardiness zone
6b (-5 to 0 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Los_Angeles (UTC−8 / UTC−7 DST)
Area codes
208, 986
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 Aug (avg high 83°F), coldest Jan (avg low 26°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F364148566672838374584436
Avg low °F262731374451575648393226
Precip in3.22.12.71.92.12.20.70.80.82.03.33.5

NOAA 1991–2020 climate normals from the nearest station: COEUR D'ALENE (7.0 mi) · NOAA NCEI

Places in ZIP 83854

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