Ramsey County
Also known as Ramsey County, Minnesota, Ramsey County, MN
county in Minnesota, United States
Key facts
- Country
- United States
- State
- Minnesota
- Founded
- October 27, 1849
- Named after
- Alexander Ramsey
- Seat
- Saint Paul
- Largest city
- Saint Paul
- Total
- 170.013 sq mi (440.33 km )
- Land
- 152.257 sq mi (394.34 km )
- Water
- 17.756 sq mi (45.99 km ) 10.44%
- Estimate 2025
- 541,623
- Density
- 3,561.234/sq mi (1,375.000/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
~13 min read
Article
Ramsey County is a county in the U.S. state of Minnesota. As of the 2020 census, the population was 552,352, making it the state's second-most populous county, and was estimated to be 541,623 in 2025. Its county seat and largest city is Saint Paul, the state capital and the twin city of Minneapolis. The county was founded in 1849 and is named for Alexander Ramsey, the first governor of the Minnesota Territory. Ramsey County is part of the Minneapolis–Saint Paul–Bloomington, MN–WI Metropolitan statistical area. It is Minnesota's smallest and most densely populated county, as well as the 38th-most densely populated county in the United States in 2010.
History