ZIP codes in Ferry County
10 ZIPs touch Ferry County, Washington. The blue dashed line is the county border; orange ZIPs reach into it.
10
ZIP codes
2
cross the county line
11,915
people in these ZIPs
39
counties in WA
Most people
Ferry County ZIP list
More counties in Washington
- Chelan County15
- Clallam County11
- Clark County24
- Columbia County5
- Cowlitz County12
- Douglas County13
- Franklin County7
- Garfield County2
- Grant County19
- Grays Harbor County22
- Island County8
- Jefferson County9
Questions people actually ask
How many ZIP codes are in Ferry County, Washington?
10 ZIP codes reach into Ferry County, including 1 PO Box or single-address ZIPs placed by the town they serve. 2 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Ferry County has the most people?
99141 (Kettle Falls) has about 5,626 residents, the most of any ZIP touching Ferry County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Ferry County and another county?
Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in Ferry County. For one address, pin the exact spot on the ZIP finder to see its county.
Where does this list come from?
ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.
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Updated 2026-11-10 · Where the data comes from