33618 -- U.S. ZIP code Municipality (1990): CARROLLWOOD, Florida All ZIPs for this municipality (1990): 33618 33624 Population (2000): 20358 Housing Units (2000): 8911 Land area (2000): 7.784636 sq. miles (20.162115 sq. km) Water area (2000): 0.470930 sq. miles (1.219704 sq. km) Total area (2000): 8.255566 sq. miles (21.381819 sq. km) Located within: Florida (FL) Location: 28.071502 N, 82.493923 W