Benton Harbor is a city in Berrien County in the U.S. state of Michigan. It is 46 miles southwest of Kalamazoo and 71 miles southwest of Grand Rapids. According to the 2020 census, its population was 9,103. It is the smaller, by population, of the two principal cities in the Niles–Benton Harbor Metropolitan Statistical Area, an area with 156,813 people. Benton Harbor and the city of St. Joseph are separated by the St. Joseph River and are known locally as the "Twin Cities".