| Place Name | Belfast |
| Place Type | Census Designated Place |
| ZIP Code(s) | 18064 |
| County | Northampton County |
| Area Code(s) | 484,610 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 1,305 |
| Population Growth Rate (2010-19) | 1.75% |
| Majority Ethnicity | White 100% |
| Metro/Micro Stats Area | Allentown-Bethlehem-Easton, PA-NJ |
| US Congressional District(s) | Pennsylvania 15th |
| State House Districts | 138 |
| State Senate Districts | 40 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 100% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |