
Colfax
- County:
- Whitman County
- County Seat:
- Yes
- Area (mi²):
- 3.772
- State:
- Washington
Colfax is a city located in Whitman County, Washington. Colfax has a 2025 population of 2,777. It is also the county seat of Whitman County. Colfax is currently growing at a rate of 0.07% annually and its population has increased by 0.4% since the most recent census, which recorded a population of 2,766 in 2020.
The average household income in Colfax is $78,643 with a poverty rate of 12.57%. The median age in Colfax is 39.7 years: 40.6 years for males, and 38.4 years for females.