Mason -- U.S. County in Kentucky Population (2000): 16800 Housing Units (2000): 7754 Land area (2000): 241.108946 sq. miles (624.469278 sq. km) Water area (2000): 5.492168 sq. miles (14.224648 sq. km) Total area (2000): 246.601114 sq. miles (638.693926 sq. km) Located within: Kentucky (KY), FIPS 21 Location: 38.612504 N, 83.797966 W Headwords: Mason Mason, KY Mason County Mason County, KY