| Place Name | Round Top |
| Place Type | Town |
| ZIP Code(s) | 78954 |
| County | Fayette County |
| Area Code(s) | 979 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 77 |
| Population Growth Rate (2010-19) | -3.33% |
| Majority Ethnicity | White 97.39% |
| US Congressional District(s) | Texas 10th |
| State House Districts | 13 |
| State Senate Districts | 18 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.39% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.61% |