Round Rock city, Texas
Official LSAD Designation: Round Rock city • Census GEOID: 4863500
• Travis County / Williamson County
Demographics & Population Profile
Population and demographics for Round Rock city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 141,282 | — | 2025 | Census |
| Median Age | 36.2 yrs | ±0.9 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 48,647 | ±1,160 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).