61850 -- U.S. ZIP code Municipality (1990): INDIANOLA, Illinois All ZIPs for this municipality (1990): 61850 Population (2000): 572 Housing Units (2000): 229 Land area (2000): 32.382871 sq. miles (83.871247 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 32.382871 sq. miles (83.871247 sq. km) Located within: Illinois (IL) Location: 39.928040 N, 87.736291 W