Rock Falls city, Illinois
Official LSAD Designation: Rock Falls city • Census GEOID: 1764928
• Whiteside County
Rock Falls city is an incorporated city in Whiteside County, Illinois. According to official records from the Census (2025), Rock Falls city had an estimated population of 8,521 residents. Official Census Bureau geographic records classify this community under LSAD designation Rock Falls city (GEOID 1764928).
Local Government Administration U.S. Census Bureau GMAF
City Of Rock Falls
Municipal
Official Title:
City Clerk
Address:
603 W 10TH ST, ROCK FALLS IL 61071-2854
County Of Whiteside
County
Official Title:
County Administrator
Address:
200 E KNOX ST, MORRISON IL 61270-2819
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 8,521 | 2025 |
| Median Household Income | $49,600 | 2020-2024 |
| Median Home Value | $83,900 | 2020-2024 |
| Land Area | 3.98 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).