Adams -- U.S. County in Ohio Population (2000): 27330 Housing Units (2000): 11822 Land area (2000): 583.909191 sq. miles (1512.317799 sq. km) Water area (2000): 1.877156 sq. miles (4.861811 sq. km) Total area (2000): 585.786347 sq. miles (1517.179610 sq. km) Located within: Ohio (OH), FIPS 39 Location: 38.846345 N, 83.502171 W Headwords: Adams Adams, OH Adams County Adams County, OH