| Zip Code : | 78663 |
| City : | Round Mountain town |
| County : | Blanco County, Travis County, Hays County |
| State : | Texas (TX) |
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| Land Area : | 123.08 sq mi |
| Water Area : | 0.69 sq mi |
| Latitude : | 30.4022608 |
| Longitude : | -98.3595692 |
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| Population (2010): | 746 |
| Population Estimate (2012) : | 783 |
| Population Density : | 6.06/sq mi |
| Housing Units (2012) : | 442 |
| Median Household Income (2012) : | $75,677 (Texas : $51,563, USA : $53,046) |
| Median Family Income (2012) : | $90,147 (Texas : $60,621, USA : $64,585) |
| Median House Price (2012) : | $117,800 (Texas : $128,000, USA : $181,400) |