From Wikipedia, the free encyclopedia. Zumbro Falls is a city along the Zumbro River in Wabasha County, Minnesota, United States. The population was 207 at the 2010 census. U.S. Highway 63 and Minnesota 60 intersect in Zumbro Falls. The original settlement on the south side of the Zumbro River dates back to 1857. A grist-mill dam built in 1866 created the falls for which the town is named.