Dakota County is the third-most populous county in the U.S. state of Minnesota, located in the east central portion of the state. As of the 2020 census, the population was 439,882. The population of Dakota County was estimated to be 447,440 in 2023. The county seat is Hastings. Dakota County is named for the Dakota Sioux tribal bands who inhabited the area.

Hastings is a city mostly in Dakota County, Minnesota, of which it is the county seat, with a portion in Washington County, Minnesota, United States. It is near the confluence of the Mississippi, Vermillion, and St. Croix Rivers. The population was 22,154 at the 2020 census. It is named for the first elected governor of Minnesota, Henry Hastings Sibley.