Olmsted County is a county located in the U.S. state of Minnesota. As of the 2020 census, the population is 162,847, and was estimated to be 166,731 in 2025, making it the seventh-most populous county in Minnesota. The county seat and the largest city is Rochester.
- Country
- United States
- Inception
- February 20, 1855
- Website
- http://www.co.olmsted.mn.us
