| Place Name | South Wilmington |
| Place Type | Village |
| ZIP Code(s) | 60474 |
| County | Grundy County |
| Area Code(s) | 815,779 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 617 |
| Population Growth Rate (2010-19) | 4.26% |
| Majority Ethnicity | White 100% |
| Metro/Micro Stats Area | Chicago-Naperville-Elgin, IL-IN-WI |
| US Congressional District(s) | Illinois 16th |
| State House Districts | 79 |
| State Senate Districts | 40 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 100% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |