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U.S. ZIP Code 61103
5-digit United States postal code #61103, Rockford, IL
ZIP code 61103 is located in the city (place name) Rockford, сounty Winnebago in the state of Illinois. The population in ZIP code 61103 is 24578 and the population density is 549.5. ZIP code 61103 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 61103 valid time zone America/Chicago.
ZIP: 61103
County: Winnebago
Place Name: Rockford
State: Illinois
State Abbreviation: IL
Coordinates: 42° 20' 46.5" N, 89° 4' 56.1" W
Latitude: 42.346250000000
Longitude: -89.082250000000
Population: 24578
Density: 549.5/km2
Time zone: America/Chicago
County FIPS: 17201
All county weights: 17201: 100%