South Milwaukee is a city in Milwaukee County, Wisconsin, United States. The population was 21,156 at the 2010 census.
South Milwaukee was laid out in 1891 by the South Milwaukee company within the Town of Oak Creek, with the purpose of serving as a rival industrial suburb of the City of Milwaukee, and was named from its location south of Milwaukee. South Milwaukee was incorporated as a village in 1892. South Milwaukee has a rich immigrant history, as immigrants from England and Germany made up a large portion of the population in the early 1900s.,
South Milwaukee is located at 42°54′40″N 87°51′51″W (42.911016, -87.864030).
According to the United States Census Bureau, the city has a total area of 4.81 square miles (12.46 km2), of which, 4.80 square miles (12.43 km2) is land and 0.01 square miles (0.03 km2) is water.
As of the census of 2010, there were 21,156 people, 9,043 households, and 5,475 families living in the city. The population density was 4,407.5 inhabitants per square mile (1,701.7/km2). There were 9,722 housing units at an average density of 2,025.4 per square mile (782.0/km2). The racial makeup of the city was 91.6% White, 2.0% African American, 0.8% Native American, 1.1% Asian, 2.1% from other races, and 2.2% from two or more races. Hispanic or Latino of any race were 8.0% of the population.
There were 9,043 households, of which 28.5% had children under the age of 18 living with them, 43.3% were married couples living together, 11.9% had a female householder with no husband present, 5.4% had a male householder with no wife present, and 39.5% were non-families.