Arden Hills is a city in Ramsey County, Minnesota, United States. The population was 9,939 at the 2020 census. Bethel University and its seminary is located in the city. Also, the campus of University of Northwestern – St. Paul straddles the Arden Hills – Roseville border. The city contains the headquarters of Land O'Lakes and Catholic United Financial, a fraternal benefit society. Boston Scientific also has a large campus within Arden Hills as well.

Ramsey County is a county located in the U.S. state of Minnesota. As of the 2020 census, the population was 552,352, making it the second-most populous county in Minnesota. 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.