Home› ZIP Codes› Illinois› 61103

ZIP Code 61103

Rockford, Illinois, United States

Standard ZIP Central Time (CT)
22,869
Population
540.5
Per sq mile
Winnebago
County

About ZIP Code 61103

ZIP code 61103 is assigned to Rockford, Winnebago County, Illinois, United States. It falls in the Central Time (CT) zone. The estimated population of this ZIP code area is 22,869 with a density of 540.5 people per square mile.

🔍 Looking for another ZIP code? Browse all US ZIP codes →

Location Details

ZIP Code61103
CityRockford
CountyWinnebago County
StateIllinois
CountryUnited States
TimezoneCentral Time (CT)
Timezone IDAmerica/Chicago
Latitude42.3453
Longitude-89.0827
ZIP TypeStandard ZIP

Post Office

Address2440 KILBURN AVE
CityROCKFORD
StateIL

Nearby ZIP Codes in Illinois

61115
Machesney Park
61101
Rockford
61111
Loves Park
61104
Rockford
61114
Rockford
61107
Rockford

Frequently Asked Questions

What city is ZIP code 61103 in?

ZIP code 61103 is in Rockford, Winnebago County, Illinois, United States.

What county is ZIP code 61103 in?

ZIP code 61103 is in Winnebago County, Illinois.

What timezone is ZIP code 61103 in?

ZIP code 61103 is in the Central Time (CT) zone (America/Chicago).

What is the population of ZIP code 61103?

The estimated population of ZIP code 61103 is 22,869 people with a density of 540.5 people per square mile.

What state is ZIP code 61103 in?

ZIP code 61103 is in Illinois (IL), United States.

📋 Data Source: United States Postal Service (USPS) & US Census Bureau (ZCTA data) · Public domain government data. For official ZIP code information visit tools.usps.com. Data is periodically updated but may not reflect the most recent changes.