Columbia County, Washington Cities (2025)

3 cities

City
Rank
2025 Pop. ↓
2020 Pop.
Change
Density
Area (mi²)
Type
Dayton12,5562,4400.91%1,7731.44 City
Starbuck21481204.23%7510.20 Town
Pataha3961196.67%2720.35 CDP

Columbia County Cities Summary

Largest City

Dayton is the largest city in Columbia County, with a population of 2,556.

Smallest City

Pataha is the smallest city in Columbia County.

10 Largest Cities

There are 3 cities in Columbia County, Washington.