Residential delivery area · Illinois
ZIP Code 61102: Rockford, IL
ZIP code 61102 uses the postal name Rockford, Illinois and lies mostly in Winnebago County (88% of its land) with the rest in Ogle County (Census 2020 ZIP-county file). About 16,000 people live there (Census Bureau, ACS 2020-2024), the 7th most populous of Rockford's 9 residential ZIP codes. Median household income is $46,599 (Census Bureau, ACS 2020-2024). By Census place, 20% of its land lies in Rockford; 80% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Rockford · 9 residential ZIPs
- County
- Winnebago County (88%); Ogle County (12%)
- Census places
- Rockford
- Neighborhoods
- Blackhawk Island Subdivision, Blackhawk Island Subdivision Number 2, Brewster Heights, Coreys Bluff, Grant View Heights, Hickory Creek and 4 more GeoNames
- Metro area
- Rockford, IL
- House districts
- IL-17 (65%), IL-16 (35%) 119th Congress, by share of land
- State
- Illinois
- Time zone
- Central
- Land area
- 34.1 sq mi · 467 people per sq mi
Where is ZIP code 61102?
61102 centers on 42.229°, -89.163° and covers 34.1 square miles of land plus 0.9 of water. It borders 7 ZIP codes: 61104, 61088, 61109, 61084, 61101, 61010, 61103.
The map draws ZIP code areas only. For the streets inside 61102, 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 61102 compare with the rest of Rockford?
| Measure | 61102 | In Rockford | In Winnebago County | In IL |
|---|---|---|---|---|
| People (ACS 2020-2024) | 15,937 | 7th of 9 | 10th of 25 | 278th of 1,396 |
| Median household income | $47k | 6th of 8 | 20th of 22 | 764th of 797 |
| Median home value | $99k | 6th of 8 | 19th of 21 | 777th of 842 |
Its median household income is higher than in 11% of U.S. residential ZIP codes, and it is denser than 71% 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 61102?
The 2020 Census counted 17,281 people in 61102; the ACS, which samples households over 2020-2024, estimates 15,937. Between the 2010 and 2020 censuses its population fell 15.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 15,937
- 2020 Census count
- 17,281−15.9% since 2010 (20,538)
- Households
- 6,047
- Median age
- 38.3
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 61102?
Of the 15,937 people the ACS estimates in 61102, 24.4% are under 18 and 14.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (39.2%), then Black (not Hispanic) (30.2%).
- Under 1824.4%
- 18 to 6460.9%
- 65 and older14.8%
- White, not Hispanic39.2%
- Black, not Hispanic30.2%
- Hispanic or Latino23.3%
- Other or two or more6.9%
- Asian, not Hispanic0.4%
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 61102 earn?
Median household income is $46,599 (ACS 2020-2024), the 20th highest of the 22 ranked ZIP codes in Winnebago County. It is not measurably different from 2015-2019 ($49,357 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $46,599±$4,882
- Income per person
- $26,006
- Below the poverty line
- 24.4%
- Unemployed (of the labor force)
- 9.6%
- Adults 25+ with a bachelor's degree
- 10.2%
- Adjusted gross income per tax return, 2022
- $47,0837,340 returns; wages 78% 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 61102?
FHFA's house price index for 61102, built from repeat sales and appraisals of the same homes, rose 117% from 2015 to 2025 and rose 88% from 2020 to 2025, and moved +20.2% in 2025.
- Median home value (owners' estimate)
- $98,900
- Median gross rent
- $883
- Homes owned by their occupants
- 64.4%
- Housing units
- 7,064
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 61102?
197 business establishments had a location in this ZIP code in 2023, 4 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade26
- Other services (except public administration)25
- Construction24
- Transportation and warehousing24
- Manufacturing18
- Administrative and support and waste management and remediation services16
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 61102?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 61104 | Rockford | 17,222 | $34k | 4.5 mi |
| 61088 | Winnebago | 6,167 | $98k | 5.8 mi |
| 61109 | Rockford | 26,768 | $63k | 6.0 mi |
| 61084 | Stillman Valley | 3,201 | $103k | 7.4 mi |
| 61101 | Rockford | 19,318 | $46k | 8.1 mi |
| 61010 | Byron | 7,497 | $94k | 8.6 mi |
| 61103 | Rockford | 22,869 | $51k | 8.6 mi |
| 61108 | Rockford | 30,355 | $64k | 8.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.