Union, Michigan

Porter Township is a civil township of Cass County in the U.S. state of Michigan. The population was 3,798 at the 2010 census.Communities Union is an unincorporated community in the southeast part of the township on US 12 at Union Rd. It has a post office.Williamsville is an unincorporated community in the northwest part of the township on Sears St. and Williamsville St.Zimmysville is an unincorporated community on the southwest part of the township near M-217GeographyPorter Township is located in the southeast corner of Cass County and is bordered to the east by St. Joseph County and to the south by the state of Indiana. The St. Joseph River forms part of the township border, cutting off what would have been the southeast corner of the township.According to the United States Census Bureau, the township has a total area of 141.5sqkm, of which 133.4sqkm is land and 8.1sqkm, or 5.73%, is water.DemographicsAs of the census of 2000, there were 3,794 people, 1,523 households, and 1,134 families residing in the township. The population density was 73.3 per square mile (28.3/km²). There were 2,040 housing units at an average density of 39.4 per square mile (15.2/km²). The racial makeup of the township was 97.36% White, 0.63% African American, 0.53% Native American, 0.08% Asian, 0.21% from other races, and 1.19% from two or more races. Hispanic or Latino of any race were 1.34% of the population.