Wilkin County is a county in the U.S. state of Minnesota. As of the 2020 census, the population of Wilkin County was 6,506. Its county seat is Breckenridge. The county is named for Colonel Alexander Wilkin, a lawyer who served as Minnesota's U.S. marshal and was later killed in the Civil War. Wilkin County is part of the Wahpeton, ND–MN Micropolitan Statistical Area, which is included in the Fargo-Wahpeton, ND-MN Combined Statistical Area.