| Place Name | Foster Township (Madison County) |
| Place Type | Township |
| ZIP Code(s) | 62002 62010 62012 62021 62035 |
| County | Madison County |
| Area Code(s) | 618 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 3,933 |
| Majority Ethnicity | White 94.39% |
| Metro/Micro Stats Area | St. Louis, MO-IL |
| US Congressional District(s) | Illinois 13th |
| State House Districts | 100,111 |
| State Senate Districts | 50,56 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.39% |
| African American | 3.52% |
| Hispanic | 0.18% |
| Asian | 1.2% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.7% |