Sanibel, FL -- U.S. city in Florida Population (2000): 6064 Housing Units (2000): 7075 Land area (2000): 17.207138 sq. miles (44.566281 sq. km) Water area (2000): 15.957642 sq. miles (41.330101 sq. km) Total area (2000): 33.164780 sq. miles (85.896382 sq. km) FIPS code: 63700 Located within: Florida (FL), FIPS 12 Location: 26.439608 N, 82.080456 W ZIP Codes (1990): 33957 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Sanibel, FL Sanibel