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 Alex…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 Paul–Bloomington, MN–WI Metropolitan statistical area. It is Minnesota's smallest and most densely populated county, as well as one of the 38th-most densely populated counties in the United States in 2010.
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