| Place Name | Somonauk |
| Place Type | Village |
| ZIP Code(s) | 60552 |
| County | DeKalb County LaSalle County |
| Area Code(s) | 815,779 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 2,201 |
| Population Growth Rate (2010-19) | -5.65% |
| Majority Ethnicity | White 93.26% |
| Metro/Micro Stats Area | Chicago-Naperville-Elgin, IL-IN-WI |
| US Congressional District(s) | Illinois 14thIllinois 16th |
| State House Districts | 90 |
| State Senate Districts | 45 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 93.26% |
| African American | 1.17% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 5.57% |