Ramsey County, Minnesota

Ramsey County
Location within the U.S. state of Minnesota
Minnesota's location within the U.S.
Coordinates: 45°00′54.734″N 93°05′59.873″W / 45.01520389°N 93.09996472°W / 45.01520389; -93.09996472
Country United States
State Minnesota
FoundedOctober 27, 1849
Named afterAlexander Ramsey
SeatSaint Paul
Largest citySaint Paul
Area
  Total
170.013 sq mi (440.33 km2)
  Land152.257 sq mi (394.34 km2)
  Water17.756 sq mi (45.99 km2)  10.44%
Population
 (2020)
  Total
552,352
  Estimate 
(2024)
542,015
  Density3,561.234/sq mi (1,375.000/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional districts4th, 5th
Websiteramseycounty.us

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 542,015 in 2024. 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 PaulBloomington, 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.