| Place Name | Middlesex Township (Butler County) |
| Place Type | Township |
| ZIP Code(s) | 15044 16002 16046 16056 16059 |
| County | Butler County |
| Area Code(s) | 724,878 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 6,719 |
| Majority Ethnicity | White 96.08% |
| Metro/Micro Stats Area | Pittsburgh, PA |
| US Congressional District(s) | Pennsylvania 3rd |
| State House Districts | 12 |
| State Senate Districts | 41 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 96.08% |
| African American | 0.13% |
| Hispanic | 0% |
| Asian | 1.42% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.36% |