Somonauk village, Illinois
Official LSAD Designation: Somonauk village • Census GEOID: 1770460
• DeKalb County / LaSalle County
Somonauk village is an incorporated village in DeKalb County, LaSalle County, Illinois. According to official records from the Census (2025), Somonauk village had an estimated population of 1,770 residents. Official Census Bureau geographic records classify this community under LSAD designation Somonauk village (GEOID 1770460).
Local Government Administration U.S. Census Bureau GMAF
Village Of Somonauk
Municipal
Official Title:
Village Trustee
Address:
PO BOX 218, SOMONAUK IL 60552-0218
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 | 1,770 | 2025 |
| Median Household Income | $84,583 | 2020-2024 |
| Median Home Value | $234,400 | 2020-2024 |
| Land Area | 2.50 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).