33890 -- U.S. ZIP code Municipality (1990): ZOLFO SPRINGS, Florida All ZIPs for this municipality (1990): 33890 Population (2000): 5088 Housing Units (2000): 2051 Land area (2000): 229.932876 sq. miles (595.523390 sq. km) Water area (2000): 0.037827 sq. miles (0.097972 sq. km) Total area (2000): 229.970703 sq. miles (595.621362 sq. km) Located within: Florida (FL) Location: 27.485551 N, 81.725284 W