Longboat Key, FL -- U.S. town in Florida Population (2000): 7603 Housing Units (2000): 8834 Land area (2000): 4.916453 sq. miles (12.733554 sq. km) Water area (2000): 12.149673 sq. miles (31.467506 sq. km) Total area (2000): 17.066126 sq. miles (44.201060 sq. km) FIPS code: 41150 Located within: Florida (FL), FIPS 12 Location: 27.396931 N, 82.644751 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Longboat Key, FL Longboat Key