
Rio
- County:
- Columbia County
- County Seat:
- No
- Area (mi²):
- 1.254
- State:
- Wisconsin
Rio is a village located in Columbia County, Wisconsin. Rio has a 2025 population of 1,135. Rio is currently growing at a rate of 0.18% annually and its population has increased by 0.98% since the most recent census, which recorded a population of 1,124 in 2020.
The average household income in Rio is $81,516 with a poverty rate of 19.98%. The median age in Rio is 40.4 years: 33.1 years for males, and 45.4 years for females.