Residential delivery area · Illinois
ZIP Code 61080: South Beloit, IL
ZIP code 61080 uses the postal name South Beloit, Illinois and lies mostly in Winnebago County (71% of its land) with the rest in Boone County (Census 2020 ZIP-county file). About 11,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $76,579 (Census Bureau, ACS 2020-2024). By Census place, 23% of its land lies in South Beloit, and 2% in smaller places; 75% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- South Beloit · its only residential ZIP
- County
- Winnebago County (71%); Boone County (29%)
- Census places
- South Beloit
- Metro area
- Rockford, IL
- House district
- IL-16 119th Congress
- State
- Illinois
- Time zone
- Central
- Land area
- 25.1 sq mi · 437 people per sq mi
Where is ZIP code 61080?
61080 centers on 42.481°, -88.984° and covers 25.1 square miles of land plus 0.4 of water. It borders 6 ZIP codes: 61073, 61011, 53511, 53525, 61072, 61065.
The map draws ZIP code areas only. For the streets inside 61080, 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).
How does 61080 compare with the rest of Winnebago County?
| Measure | 61080 | In Winnebago County | In IL |
|---|---|---|---|
| People (ACS 2020-2024) | 10,955 | 13th of 25 | 350th of 1,396 |
| Median household income | $77k | 13th of 22 | 435th of 797 |
| Median home value | $181k | 10th of 21 | 424th of 842 |
Its median household income is higher than in 57% 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 61080?
The 2020 Census counted 11,252 people in 61080; the ACS, which samples households over 2020-2024, estimates 10,955. Between the 2010 and 2020 censuses its population grew 6.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 10,955
- 2020 Census count
- 11,252+6.2% since 2010 (10,599)
- Households
- 4,716
- Median age
- 38.7
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 61080?
Of the 10,955 people the ACS estimates in 61080, 23.5% are under 18 and 16.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (77.0%), then Hispanic or Latino (12.4%).
- Under 1823.5%
- 18 to 6460.3%
- 65 and older16.2%
- White, not Hispanic77.0%
- Hispanic or Latino12.4%
- Other or two or more6.4%
- Black, not Hispanic2.9%
- Asian, not Hispanic1.4%
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 61080 earn?
Median household income is $76,579 (ACS 2020-2024), the 13th highest of the 22 ranked ZIP codes in Winnebago County. It is not measurably different from 2015-2019 ($75,530 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $76,579±$12,646
- Income per person
- $40,181
- Below the poverty line
- 10.6%
- Unemployed (of the labor force)
- 4.9%
- Adults 25+ with a bachelor's degree
- 27.1%
- Adjusted gross income per tax return, 2022
- $75,8144,930 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 61080?
FHFA's house price index for 61080, built from repeat sales and appraisals of the same homes, rose 91% from 2015 to 2025 and rose 64% from 2020 to 2025, and moved +3.2% in 2025.
- Median home value (owners' estimate)
- $181,200
- Median gross rent
- $942
- Homes owned by their occupants
- 72.9%
- Housing units
- 5,040
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 61080?
219 business establishments had a location in this ZIP code in 2023, 6 more than in 2018; the most are in manufacturing (ZIP Code Business Patterns).
- Manufacturing41
- Retail trade32
- Accommodation and food services30
- Construction28
- Other services (except public administration)23
- Administrative and support and waste management and remediation services13
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 61080?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 61073 | Roscoe | 20,194 | $102k | 4.0 mi |
| 61011 | Caledonia | 2,676 | $127k | 7.6 mi |
| 53511 | Beloit, WI | 48,701 | $67k | 7.7 mi |
| 53525 | Clinton, WI | 4,066 | $79k | 8.2 mi |
| 61072 | Rockton | 11,285 | $105k | 8.3 mi |
| 61065 | Poplar Grove | 10,570 | $97k | 9.3 mi |
| 61115 | Machesney Park | 22,364 | $75k | 8.4 mi (near) |
| 53501 | Afton, WI | 165 | – | 9.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.