Barron County is a county located in the U.S. state of Wisconsin. As of the 2020 census, the population was 46,711. Its county seat is Barron. The county was created in 1859 and later organized in 1874.

Barron is a city in Barron County, in the U.S. state of Wisconsin. The population was 3,733 at the 2020 census. The city is surrounded by the Town of Barron.