| ZIP Codes: | 8 ZIP Codes (7 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Code: | 509 |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 11:55:35 PM |
| Population: | 6,289 [See All] |
| FIPS: | 53019 |
| Land Area: | 1,847 sq mi |
| Water Area: | 48 sq mi |
| Coordinates: | 48.6809, -118.4825 |
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6,289 residents live across 8 ZIPs covering 1,847 sq mi, served by 8 distinct USPS-recognized cities.
Population moved from 6,689 to 6,289 from 2014 to 2024 — a -6.0% change. 5 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 99118 (Curlew, $68,875 median) and poorest ZIP 99138 (Inchelium, $50,833) are 46.7 miles apart — a 1.4× income gap across local geography.
Median home values vary 39.2× across this county — from $9,999 in 99160 (Orient) to $392,000 in 99121 (Danville).
Density varies 197× across the county — from 1 people/sq mi in 99140 (Keller) to 201 in 99160 (Orient).
Educational attainment ranges from 11.1% bachelor's+ in 99160 (Orient) to 45.1% in 99121 (Danville) — the breadth of educational profiles across the area.
Within Washington, this is the #36 most populous of 39 counties and ranks #39 for median household income .
Weighted by population, the typical household earns about $57,370 across the county — reflecting what a typical resident sees, not a simple ZIP average.
16.9% of adults age 25+ hold a bachelor's degree or higher (805 of 4,772 reporting).
7 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.
Ferry County lost 6.0% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 99166 | Republic | Standard | 2,953 | $56,676 | 517.2 | -18.1% |
| 99138 | Inchelium | Standard | 1,223 | $50,833 | 538.6 | 2.3% |
| 99118 | Curlew | Standard | 899 | $68,875 | 219.5 | 5.8% |
| 99140 | Keller | Standard | 486 | $53,529 | 474.9 | 18.8% |
| 99150 | Malo | Standard | 351 | $61,833 | 35.0 | 38.7% |
| 99121 | Danville | Standard | 262 | — | 59.3 | 63.8% |
| 99160 | Orient | Standard | 87 | — | 0.4 | -31.5% |
| 99146 | Laurier | PO Box | 28 | — | 1.9 | -68.5% |