33540 -- U.S. ZIP code Municipality (1990): ZEPHYRHILLS, Florida All ZIPs for this municipality (1990): 33540 33541 33544 Population (2000): 18837 Housing Units (2000): 10679 Land area (2000): 45.763124 sq. miles (118.525941 sq. km) Water area (2000): 0.089487 sq. miles (0.231770 sq. km) Total area (2000): 45.852611 sq. miles (118.757711 sq. km) Located within: Florida (FL) Location: 28.235313 N, 82.168684 W