Mercer Island, WA zip code
Mercer Island, Washington uses one zip code: 98040. Most of it is in King County. Together these zip codes are home to about 25K people.
Zip codes
1
Population
25K
All zips combined
Largest zip
98040
25,307 residents
Zip codes in Mercer Island
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 98040 | 25,307 | $219,069 |