Columbus
- County:
- Columbia County
- County Seat:
- No
- Area (mi²):
- 4.539
- State:
- Wisconsin
Columbus is a city located in Columbia County, Wisconsin. Columbus has a 2026 population of 5,429. Columbus is currently declining at a rate of -0.62% annually and its population has decreased by -1.84% since the most recent census, which recorded a population of 5,531 in 2020.