61104 -- U.S. ZIP code
Municipality (1990): ROCKFORD, Illinois
All ZIPs for this municipality (1990):
61101 61102 61103 61104 61107 61108
61109 61112
Population (2000): 20421
Housing Units (2000): 9533
Land area (2000): 4.480910 sq. miles (11.605503 sq. km)
Water area (2000): 0.002407 sq. miles (0.006234 sq. km)
Total area (2000): 4.483317 sq. miles (11.611737 sq. km)
Located within: Illinois (IL)
Location: 42.255370 N, 89.076029 W