Hanover, Wisconsin
Hanover is an unincorporated census-designated place located in the town of Plymouth, Rock County, Wisconsin, United States. It is west of Janesville and east of Orfordville. As of the 2010 census, its population was 181. History. Hanover was originally called Bass Creek. The present name is after Hanover, Germany, the native home of a large share of the early settlers. A post office was established as Bass Creek in 1856 and renamed Hanover in 1859; the post office closed in 2014.