62963 -- U.S. ZIP code Municipality (1990): MOUND CITY, Illinois All ZIPs for this municipality (1990): 62963 Population (2000): 730 Housing Units (2000): 337 Land area (2000): 4.786706 sq. miles (12.397512 sq. km) Water area (2000): 0.045580 sq. miles (0.118051 sq. km) Total area (2000): 4.832286 sq. miles (12.515563 sq. km) Located within: Illinois (IL) Location: 37.087510 N, 89.165327 W