Sycamore city, Illinois
Official LSAD Designation: Sycamore city • Census GEOID: 1774223
• DeKalb County
Sycamore city is an incorporated city in DeKalb County, Illinois. According to official records from the Census (2025), Sycamore city had an estimated population of 19,083 residents. Official Census Bureau geographic records classify this community under LSAD designation Sycamore city (GEOID 1774223).
Local Government Administration U.S. Census Bureau GMAF
City Of Sycamore
Municipal
Official Title:
Treasurer
Address:
308 W STATE ST, STE 102, SYCAMORE IL 60178-1453
County Of Dekalb
County
Official Title:
County Administrator
Address:
200 N MAIN ST, SYCAMORE IL 60178-1431
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 19,083 | 2025 |
| Median Household Income | $84,120 | 2020-2024 |
| Median Home Value | $265,700 | 2020-2024 |
| Land Area | 10.14 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).