32446 -- U.S. ZIP code Municipality (1990): MARIANNA, Florida All ZIPs for this municipality (1990): 32446 Population (2000): 9601 Housing Units (2000): 4489 Land area (2000): 156.691832 sq. miles (405.829964 sq. km) Water area (2000): 2.879938 sq. miles (7.459006 sq. km) Total area (2000): 159.571770 sq. miles (413.288970 sq. km) Located within: Florida (FL) Location: 30.804698 N, 85.220606 W