ZIP Code 99111 – Colfax, WA
Colfax, Washington · Whitman County · Pacific time
| ZIP code | 99111 |
|---|---|
| City | Colfax |
| State | Washington |
| County | Whitman County |
| Population | 4,038 |
| Time zone | Pacific · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 306.99 sq mi |
| Center (lat, long) | 46.8559, -117.4512 |
Area codes in this area
These are the area codes that most often serve ZIP 99111 (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 99111
ZIP code 99111 is assigned to Colfax, Washington. It lies in Whitman County. Its Census area covers about 306.99 square miles of land. The closest neighboring ZIP is 99102 (Albion), about 10.4 miles away.
Every address in 99111 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