Residential delivery area · Illinois
ZIP Code 61103: Rockford, IL
ZIP code 61103 uses the postal name Rockford, Illinois and lies entirely in Winnebago County (Census 2020 ZIP-county file). About 23,000 people live there (Census Bureau, ACS 2020-2024), the 4th most populous of Rockford's 9 residential ZIP codes. Median household income is $51,161 (Census Bureau, ACS 2020-2024). By Census place, 34% of its land lies in Rockford, and 2% in smaller places; 65% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Rockford · 9 residential ZIPs
- County
- Winnebago County
- Census places
- Rockford
- Neighborhood
- Colonial Gardens GeoNames
- Metro area
- Rockford, IL
- House districts
- IL-16 (73%), IL-17 (27%) 119th Congress, by share of land
- State
- Illinois
- Time zone
- Central
- Land area
- 16.3 sq mi · 1,400 people per sq mi
Where is ZIP code 61103?
61103 centers on 42.340°, -89.087° and covers 16.3 square miles of land plus 0.5 of water. It borders 7 ZIP codes: 61101, 61115, 61111, 61107, 61073, 61072, 61102.
The map draws ZIP code areas only. For the streets inside 61103, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 61103 compare with the rest of Rockford?
| Measure | 61103 | In Rockford | In Winnebago County | In IL |
|---|---|---|---|---|
| People (ACS 2020-2024) | 22,869 | 4th of 9 | 5th of 25 | 213th of 1,396 |
| Median household income | $51k | 5th of 8 | 19th of 22 | 739th of 797 |
| Median home value | $116k | 5th of 8 | 18th of 21 | 700th of 842 |
Its median household income is higher than in 16% of U.S. residential ZIP codes, and it is denser than 81% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 61103?
The 2020 Census counted 23,294 people in 61103; the ACS, which samples households over 2020-2024, estimates 22,869. Between the 2010 and 2020 censuses its population fell 5.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 22,869
- 2020 Census count
- 23,294−5.2% since 2010 (24,578)
- Households
- 9,866
- Median age
- 40.5
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 61103?
Of the 22,869 people the ACS estimates in 61103, 21.3% are under 18 and 18.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (56.7%), then Black (not Hispanic) (23.7%).
- Under 1821.3%
- 18 to 6459.8%
- 65 and older18.9%
- White, not Hispanic56.7%
- Black, not Hispanic23.7%
- Hispanic or Latino12.3%
- Other or two or more6.8%
- Asian, not Hispanic0.6%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 61103 earn?
Median household income is $51,161 (ACS 2020-2024), the 19th highest of the 22 ranked ZIP codes in Winnebago County. It is not measurably different from 2015-2019 ($47,995 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $51,161±$5,255
- Income per person
- $30,331
- Below the poverty line
- 20.7%
- Unemployed (of the labor force)
- 7.5%
- Adults 25+ with a bachelor's degree
- 19.7%
- Adjusted gross income per tax return, 2022
- $52,94710,270 returns; wages 72% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 61103?
FHFA's house price index for 61103, built from repeat sales and appraisals of the same homes, rose 103% from 2015 to 2025 and rose 78% from 2020 to 2025, and moved +7.3% in 2025.
- Median home value (owners' estimate)
- $115,500
- Median gross rent
- $934
- Homes owned by their occupants
- 51.6%
- Housing units
- 11,032
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 61103?
327 business establishments had a location in this ZIP code in 2023, 21 fewer than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance43
- Retail trade36
- Accommodation and food services35
- Manufacturing34
- Other services (except public administration)32
- Professional, scientific, and technical services31
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 61103?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 61101 | Rockford | 19,318 | $46k | 3.1 mi |
| 61115 | Machesney Park | 22,364 | $75k | 3.5 mi |
| 61111 | Loves Park | 23,286 | $61k | 4.3 mi |
| 61107 | Rockford | 30,765 | $79k | 5.8 mi |
| 61073 | Roscoe | 20,194 | $102k | 7.5 mi |
| 61072 | Rockton | 11,285 | $105k | 7.5 mi |
| 61102 | Rockford | 15,937 | $47k | 8.6 mi |
| 61114 | Rockford | 15,325 | $86k | 5.4 mi (near) |
| 61104 | Rockford | 17,222 | $34k | 6.1 mi (near) |
| 61108 | Rockford | 30,355 | $64k | 7.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.