About This Place
West Union is a city in Fayette County, Iowa, United States. The population was 2,549 at the 2000 census. It is the county seat of Fayette County.
Originally called Knob Prairie, it was founded by William Wells, naming it for his hometown, also called West Union, in Ohio.
West Union is located at 42°57′43″N 91°48′36″W / 42.96194°N 91.81°W / 42.96194; -91.81 (42.962035, -91.810055).