Watertown is a small city in Carver County, Minnesota, United States, along the South Fork of the Crow River, on the outskirts of the Twin Cities metro area. The population was 4,659 at the 2020 census.

Carver County is a county in the U.S. state of Minnesota. The county is mostly farmland and wilderness with many unincorporated townships. As of the 2020 census, the population was 106,922. Its county seat is Chaska. Carver County is named for explorer Jonathan Carver, who in 1766–67, traveled from Boston to the Minnesota River and wintered among the Sioux near the site of New Ulm. Carver County is part of the Minneapolis-St. Paul-Bloomington, MN-WI Metropolitan Statistical Area.