Island County, Washington
Island County is a county in Washington. Its county FIPS code is 53029. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 53029
- Representative coordinates
- 48.158554, -122.670649
- County type
- County
- County seat or government
- Coupeville
- Resident population, July 2025
- 85,657
- Land area
- 540.526 km²
- Water area
- 799.338 km²
- State
- Washington
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Island County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Los_Angeles | UTC-08:00 in January; UTC-07:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
98236 · 98239 · 98249 · 98253 · 98260 · 98277 · 98278 · 98282
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Use the US government local-office directory ↗ to find the office responsible for your address. A county website has not been confidently matched here. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county at your current point, check its ZIP area, or find its physical time zone.