Hamilton, WA ZIP code
The ZIP code for Hamilton, Washington is 98255. It is in Skagit County.
- Population in these ZIPs
- 198
- Avg. median income
- $68,200population-weighted
- Typical home value
- $217,500population-weighted
- Metro area
- Mount Vernon-Anacortes, WA
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Hamilton, WA ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 98255 | 198 | $68,194 | $217,500 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Hamilton
- Lyman 3 mi
- Sedro Woolley 7 mi
- Clearlake 12 mi
- Concrete 13 mi
- Acme 15 mi
- Mount Vernon 16 mi
- Burlington 16 mi
- Deming 18 mi
- Bow 19 mi
- Conway 21 mi
- Arlington 21 mi
- Stanwood 25 mi
Frequently asked questions
What is the ZIP code for Hamilton, WA?
The ZIP code for Hamilton, WA is 98255.
What county is Hamilton, Washington in?
Hamilton ZIP codes are in Skagit County.