Herrin city, Illinois
Official LSAD Designation: Herrin city • Census GEOID: 1734358
• Williamson County
Herrin city is an incorporated city in Williamson County, Illinois. According to official records from the Census (2025), Herrin city had an estimated population of 12,268 residents. Official Census Bureau geographic records classify this community under LSAD designation Herrin city (GEOID 1734358).
Local Government Administration U.S. Census Bureau GMAF
City Of Herrin
Municipal
Official Title:
Accountant
Address:
300 N PARK AVE, HERRIN IL 62948-3199
County Of Williamson
County
Official Title:
Administrator
Address:
407 N MONROE ST STE 119, MARION IL 62959-2321
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 12,268 | 2025 |
| Median Household Income | $59,975 | 2020-2024 |
| Median Home Value | $113,300 | 2020-2024 |
| Land Area | 9.67 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).