Somonauk village, Illinois
Official LSAD Designation: Somonauk village • Census GEOID: 1770460
• DeKalb County / LaSalle County
Demographics & Population Profile
Population and demographics for Somonauk village.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 1,770 | — | 2025 | Census |
| Median Age | 45.6 yrs | ±4.4 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 659 | ±89 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).