34639 -- U.S. ZIP code Municipality (1990): LAND O LAKES, Florida All ZIPs for this municipality (1990): 34639 Population (2000): 19205 Housing Units (2000): 7294 Land area (2000): 92.252384 sq. miles (238.932567 sq. km) Water area (2000): 3.460226 sq. miles (8.961945 sq. km) Total area (2000): 95.712610 sq. miles (247.894512 sq. km) Located within: Florida (FL) Location: 28.233671 N, 82.454633 W