| ZIP Codes: | 18 ZIP Codes (17 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Code: | 509 |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 2:14:17 PM |
| Population: | 39,915 [See All] |
| FIPS: | 53065 |
| CBSA: | Spokane-Spokane Valley, WA |
| Land Area: | 2,888 sq mi |
| Water Area: | 66 sq mi |
| Coordinates: | 48.2885, -117.9058 |
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39,915 residents live across 18 ZIPs covering 2,888 sq mi, served by 18 distinct USPS-recognized cities.
Population moved from 37,338 to 39,915 from 2014 to 2024 — a +6.9% change. 10 ZIPs gained residents, 8 lost.
The county's wealthiest ZIP 99101 (Addy, $78,750 median) and poorest ZIP 99129 (Fruitland, $40,938) are 26.5 miles apart — a 1.9× income gap across local geography.
Median home values vary 2.7× across this county — from $169,400 in 99151 (Marcus) to $453,100 in 99110 (Clayton).
Density varies 278× across the county — from 4 people/sq mi in 99040 (Wellpinit) to 1,100 in 99151 (Marcus).
Educational attainment ranges from 5.7% bachelor's+ in 99013 (Ford) to 32.2% in 99148 (Loon Lake) — the breadth of educational profiles across the area.
Within Washington, this is the #26 most populous of 39 counties and ranks #38 for median household income with the #31 fastest decade growth .
Weighted by population, the typical household earns about $62,260 across the county — reflecting what a typical resident sees, not a simple ZIP average.
21.1% of adults age 25+ hold a bachelor's degree or higher (6,238 of 29,519 reporting).
17 Standard delivery, 1 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.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 99114 | Colville | Standard | 13,383 | $62,711 | 787.2 | 14.5% |
| 99141 | Kettle Falls | Standard | 5,626 | $58,302 | 658.7 | 6.9% |
| 99109 | Chewelah | Standard | 4,981 | $62,391 | 310.1 | -2.7% |
| 99148 | Loon Lake | Standard | 2,794 | $67,431 | 87.2 | 39.8% |
| 99181 | Valley | Standard | 1,995 | $63,661 | 98.9 | 7.8% |
| 99101 | Addy | Standard | 1,690 | $78,750 | 95.4 | 2.7% |
| 99173 | Springdale | Standard | 1,623 | $60,000 | 138.0 | 1.8% |
| 99013 | Ford | Standard | 1,620 | $49,518 | 76.1 | -10.5% |
| 99110 | Clayton | Standard | 1,505 | $76,106 | 39.4 | -5.3% |
| 99126 | Evans | Standard | 899 | — | 56.0 | -14.4% |
| 99167 | Rice | Standard | 871 | $70,364 | 69.1 | 32.2% |
| 99129 | Fruitland | Standard | 725 | $40,938 | 138.3 | -12.5% |
| 99157 | Northport | Standard | 605 | $43,650 | 72.2 | -28.1% |
| 99040 | Wellpinit | Standard | 536 | $70,200 | 135.6 | -16.8% |
| 99137 | Hunters | Standard | 495 | $50,972 | 80.1 | 56.6% |
| 99151 | Marcus | PO Box | 242 | $55,489 | 0.2 | 58.2% |
| 99034 | Tumtum | Standard | 198 | — | 22.6 | 51.1% |
| 99131 | Gifford | Standard | 127 | $35,391 | 22.5 | -17.0% |