ZIP Code 99346 – Plymouth, WA
Plymouth, Washington · Benton County · Pacific time
| ZIP code | 99346 |
|---|---|
| City | Plymouth |
| State | Washington |
| County | Benton County |
| Population | 198 |
| Time zone | Pacific · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 142.89 sq mi |
| Center (lat, long) | 46.0307, -119.3032 |
Area codes in this area
These are the area codes that most often serve ZIP 99346 (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 99346
ZIP code 99346 is assigned to Plymouth, Washington. It lies in Benton County. Its Census area covers about 142.89 square miles of land. The closest neighboring ZIP is 97882 (Umatilla), about 8.8 miles away.
Every address in 99346 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