Lanark city, Illinois
Official LSAD Designation: Lanark city • Census GEOID: 1741859
• Carroll County
Lanark city is an incorporated city in Carroll County, Illinois. According to official records from the Census (2025), Lanark city had an estimated population of 1,452 residents. Official Census Bureau geographic records classify this community under LSAD designation Lanark city (GEOID 1741859).
Local Government Administration U.S. Census Bureau GMAF
City Of Lanark
Municipal
Official Title:
Clerk
Address:
PO BOX 6, 111A S BROAD ST, LANARK IL 61046-0006
County Of Carroll
County
Official Title:
Treasurer
Address:
PO BOX 198, MOUNT CARROLL IL 61053-0198
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 1,452 | 2025 |
| Median Household Income | $59,375 | 2020-2024 |
| Median Home Value | $96,600 | 2020-2024 |
| Land Area | 1.12 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).