| Place Name | Middletown (Dauphin County) |
| Place Type | Borough |
| ZIP Code(s) | 17057 |
| County | Dauphin County |
| Area Code(s) | 717 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 8,936 |
| Population Growth Rate (2010-19) | 7.10% |
| Majority Ethnicity | White 77.3% |
| Metro/Micro Stats Area | Harrisburg-Carlisle, PA |
| US Congressional District(s) | Pennsylvania 15th |
| State House Districts | 106 |
| State Senate Districts | 48 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 77.3% |
| African American | 9.76% |
| Hispanic | 0.08% |
| Asian | 5.39% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 7.47% |