| Place Name | Londonderry Township (Dauphin County) |
| Place Type | Township |
| County | Dauphin County |
| Area Code(s) | 717 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 4,922 |
| Majority Ethnicity | White 85.14% |
| Metro/Micro Stats Area | Harrisburg-Carlisle, PA |
| US Congressional District(s) | Pennsylvania 15th |
| State House Districts | 98 |
| State Senate Districts | 48 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 85.14% |
| African American | 0.31% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 14.55% |