| Place Name | Mertztown |
| Place Type | Census Designated Place |
| ZIP Code(s) | 19539 |
| County | Berks County |
| Area Code(s) | 484,610 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 884 |
| Population Growth Rate (2010-19) | -9.64% |
| Majority Ethnicity | White 93.94% |
| Metro/Micro Stats Area | Reading, PA |
| US Congressional District(s) | Pennsylvania 15th |
| State House Districts | 134 |
| State Senate Districts | 24 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 93.94% |
| African American | 2.26% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.8% |