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U.S. ZIP Code 61104
5-digit United States postal code #61104, Rockford, IL
ZIP code 61104 is located in the city (place name) Rockford, сounty Winnebago in the state of Illinois. The population in ZIP code 61104 is 19269 and the population density is 1649.5. ZIP code 61104 refers to сounty Winnebago having сounty FIPS 17201, the ratio of people from different counties in this ZIP code is as follows: all county weights - 17201: 100%. In the area of the ZIP code 61104 valid time zone America/Chicago.
ZIP: 61104
County: Winnebago
Place Name: Rockford
State: Illinois
State Abbreviation: IL
Coordinates: 42° 15' 6.876" N, 89° 4' 44.22" W
Latitude: 42.251910000000
Longitude: -89.078950000000
Population: 19269
Density: 1649.5/km2
Time zone: America/Chicago
County FIPS: 17201
All county weights: 17201: 100%