Pierce -- U.S. County in Wisconsin Population (2000): 36804 Housing Units (2000): 13493 Land area (2000): 576.486252 sq. miles (1493.092474 sq. km) Water area (2000): 15.098751 sq. miles (39.105584 sq. km) Total area (2000): 591.585003 sq. miles (1532.198058 sq. km) Located within: Wisconsin (WI), FIPS 55 Location: 44.735376 N, 92.463689 W Headwords: Pierce Pierce, WI Pierce County Pierce County, WI