ZIP Code 98038 – Maple Valley, WA
Maple Valley, Washington · King County · Pacific time
| ZIP code | 98038 |
|---|---|
| City | Maple Valley |
| State | Washington |
| County | King County |
| Population | 37,324 |
| Time zone | Pacific · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 65.81 sq mi |
| Center (lat, long) | 47.4194, -121.9580 |
Area codes in this area
These are the area codes that most often serve ZIP 98038 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Map
Nearby ZIP codes
About ZIP 98038
ZIP code 98038 is assigned to Maple Valley, Washington. It lies in King County. Its Census area covers about 65.81 square miles of land. The closest neighboring ZIP is 98025 (Hobart), about 1.1 miles away.
Every address in 98038 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.
Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources