34974 -- U.S. ZIP code Municipality (1990): OKEECHOBEE, Florida All ZIPs for this municipality (1990): 34974 Population (2000): 21784 Housing Units (2000): 11959 Land area (2000): 399.048912 sq. miles (1033.531893 sq. km) Water area (2000): 3.069754 sq. miles (7.950626 sq. km) Total area (2000): 402.118666 sq. miles (1041.482519 sq. km) Located within: Florida (FL) Location: 27.194400 N, 80.846444 W