| City : | Opal |
| County : | Fauquier County, Lake County, Terrell County |
| State : | Virginia (VA) |
| | |
| Land Area : | 3.14 sq mi |
| Water Area : | 0.03 sq mi |
| Latitude : | 38.6159054 |
| Longitude : | -77.8090571 |
| | |
| Population (2010): | 691 |
| Population Estimate (2012) : | 661 |
| Population Density : | 220.30/sq mi |
| Housing Units (2012) : | 232 |
| Median Household Income (2012) : | $76,771 (Virginia : $63,636, USA : $53,046) |
| Median Family Income (2012) : | $82,917 (Virginia : $76,566, USA : $64,585) |
| Median House Price (2012) : | $289,700 (Virginia : $249,700, USA : $181,400) |