| ZIP Codes: | 3 ZIP Codes (3 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 509 |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 11:55:35 PM |
| Population: | 22,480 [See All] |
| FIPS: | 53003 |
| CBSA: | Lewiston, ID-WA |
| Land Area: | 760 sq mi |
| Water Area: | 4 sq mi |
| Coordinates: | 46.2128, -117.1571 |
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22,480 residents live across 3 ZIPs covering 760 sq mi, served by 3 distinct USPS-recognized cities.
Population moved from 22,027 to 22,480 from 2014 to 2024 — a +2.1% change. 1 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 99402 (Asotin, $78,906 median) and poorest ZIP 99401 (Anatone, $41,438) are 9.4 miles apart — a 1.9× income gap across local geography.
Median home values vary 1.1× across this county — from $322,500 in 99401 (Anatone) to $339,800 in 99402 (Asotin).
Density varies 175× across the county — from 1 people/sq mi in 99401 (Anatone) to 136 in 99403 (Clarkston).
Educational attainment ranges from 5.1% bachelor's+ in 99401 (Anatone) to 25.0% in 99403 (Clarkston) — the breadth of educational profiles across the area.
Within Washington, this is the #31 most populous of 39 counties and ranks #37 for median household income .
Weighted by population, the typical household earns about $71,778 across the county — reflecting what a typical resident sees, not a simple ZIP average.
24.7% of adults age 25+ hold a bachelor's degree or higher (4,075 of 16,505 reporting).
3 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.