Brown -- U.S. County in Ohio Population (2000): 42285 Housing Units (2000): 17193 Land area (2000): 491.758790 sq. miles (1273.649365 sq. km) Water area (2000): 3.457361 sq. miles (8.954523 sq. km) Total area (2000): 495.216151 sq. miles (1282.603888 sq. km) Located within: Ohio (OH), FIPS 39 Location: 38.926434 N, 83.872440 W Headwords: Brown Brown, OH Brown County Brown County, OH