| Place Name | Pleasant Hills |
| Place Type | Census Designated Place |
| ZIP Code(s) | 21014 21047 21085 21087 |
| County | Harford County |
| Area Code(s) | 410,443,667 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 3,586 |
| Population Growth Rate (2010-19) | 18.32% |
| Majority Ethnicity | White 86.92% |
| Metro/Micro Stats Area | Baltimore-Columbia-Towson, MD |
| US Congressional District(s) | Maryland 1st |
| House of Delegates Districts | 7 |
| State Senate Districts | 7 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 86.92% |
| African American | 1.71% |
| Hispanic | 0% |
| Asian | 8.56% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.81% |