34228 -- U.S. ZIP code Municipality (1990): WHITNEY BEACH, Florida All ZIPs for this municipality (1990): 34228 Population (2000): 7603 Housing Units (2000): 8834 Land area (2000): 4.916453 sq. miles (12.733554 sq. km) Water area (2000): 0.003935 sq. miles (0.010191 sq. km) Total area (2000): 4.920388 sq. miles (12.743745 sq. km) Located within: Florida (FL) Location: 27.396931 N, 82.644751 W