34231 -- U.S. ZIP code Municipality (1990): SOUTH TRAIL, Florida All ZIPs for this municipality (1990): 34231 Population (2000): 31885 Housing Units (2000): 17463 Land area (2000): 9.720240 sq. miles (25.175304 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 9.720240 sq. miles (25.175304 sq. km) Located within: Florida (FL) Location: 27.267649 N, 82.516634 W