South Beloit city, Illinois
Official LSAD Designation: South Beloit city • Census GEOID: 1770590
• Winnebago County
South Beloit city is an incorporated city in Winnebago County, Illinois. According to official records from the Census (2025), South Beloit city had an estimated population of 7,996 residents. Official Census Bureau geographic records classify this community under LSAD designation South Beloit city (GEOID 1770590).
Local Government Administration U.S. Census Bureau GMAF
City Of South Beloit
Municipal
Official Title:
Mayor
Address:
519 BLACKHAWK BLVD, STE 2, SOUTH BELOIT IL 61080-1999
County Of Winnebago
County
Official Title:
Payroll Manager
Address:
404 ELM ST, STE 520, ROCKFORD IL 61101-1244
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 7,996 | 2025 |
| Median Household Income | $78,616 | 2020-2024 |
| Median Home Value | $173,000 | 2020-2024 |
| Land Area | 6.17 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).