| Place Name | Southwest Madison Township |
| Place Type | Township |
| ZIP Code(s) | 17035 17037 17040 17047 |
| County | Perry County |
| Area Code(s) | 717 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 1,247 |
| Majority Ethnicity | White 98.18% |
| Metro/Micro Stats Area | Harrisburg-Carlisle, PA |
| US Congressional District(s) | Pennsylvania 10th |
| State House Districts | 86 |
| State Senate Districts | 15 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 98.18% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0.32% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.5% |