| City : | Round Rock City |
| County : | Payne County, Travis County, Williamson County |
| State : | Texas (TX) |
| | |
| Land Area : | 34.11 sq mi |
| Water Area : | 0.30 sq mi |
| Latitude : | 30.5237164 |
| Longitude : | -97.6673626 |
| | |
| Population (2010): | 99,887 |
| Population Estimate (2012) : | 100,764 |
| Population Density : | 2,928.16/sq mi |
| Housing Units (2012) : | 37,223 |
| Median Household Income (2012) : | $69,998 (Texas : $51,563, USA : $53,046) |
| Median Family Income (2012) : | $80,348 (Texas : $60,621, USA : $64,585) |
| Median House Price (2012) : | $168,100 (Texas : $128,000, USA : $181,400) |