Sebastian, FL -- U.S. city in Florida Population (2000): 16181 Housing Units (2000): 7287 Land area (2000): 12.620016 sq. miles (32.685689 sq. km) Water area (2000): 0.927483 sq. miles (2.402170 sq. km) Total area (2000): 13.547499 sq. miles (35.087859 sq. km) FIPS code: 64825 Located within: Florida (FL), FIPS 12 Location: 27.782751 N, 80.482352 W ZIP Codes (1990): 32958 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Sebastian, FL Sebastian