| Place Name | Rosemont |
| Place Type | Census Designated Place |
| ZIP Code(s) | 19010 |
| County | Delaware County Montgomery County |
| Area Code(s) | 484,610 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 3,593 |
| Majority Ethnicity | White 78.75% |
| Metro/Micro Stats Area | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD |
| US Congressional District(s) | Pennsylvania 2ndPennsylvania 7th |
| State House Districts | 149,166 |
| State Senate Districts | 17 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 78.75% |
| African American | 3.47% |
| Hispanic | 0% |
| Asian | 13.55% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.22% |