| | Topaz Ranch Estates, NV | Gardnerville, NV | United States |
| Population | 1,654 | 6,037 | 329,725,481 |
| Female Population | 48.9% | 46.2% | 50.5% |
| Male Population | 51.1% | 53.8% | 49.5% |
| Median Age | 57 | 49.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,626 | 5,636 | 309,327,143 |
| Population - 2000 | 1,259 | 3,357 | 285,036,114 |
| Population - 1990 | 890 | 2,177 | 251,960,433 |
| Pop. 2000 to Now | 32.4% | 86.1% | 15.6% |
| Pop. 1990 to Now | 87.3% | 186.9% | 30.8% |
| space4 | | | |
| Population Density | 114.9 | 1,257.2 | 93.4 |
| Land Area | 14.4 | 4.8 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Topaz Ranch Estates, NV | Gardnerville, NV | United States |
| Age 0 to 4 | 4.3% | 3.2% | 5.9% |
| Age 5 to 9 | 4.5% | 6.3% | 6.1% |
| Age 10 to 14 | 3.8% | 2.9% | 6.6% |
| Age 15 to 17 | 1.6% | 2.5% | 3.9% |
| Age 18 to 20 | 1.7% | 5.6% | 4.0% |
| Age 21 to 24 | 2.4% | 0.4% | 5.2% |
| Age 25 to 34 | 9.4% | 15.6% | 13.8% |
| Age 35 to 44 | 7.3% | 9.3% | 12.9% |
| Age 45 to 54 | 11.4% | 12.7% | 12.6% |
| Age 55 to 59 | 10.0% | 7.8% | 6.7% |
| Age 60 to 64 | 12.1% | 8.5% | 6.3% |
| Age 65 to 74 | 19.7% | 13.6% | 9.6% |
| Age 75 to 84 | 9.7% | 9.0% | 4.5% |
| Age 85 and over | 2.2% | 2.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Topaz Ranch Estates, NV | Gardnerville, NV | United States |
| White | 77.6% | 76.6% | 59.4% |
| Black | 2.9% | 3.2% | 12.2% |
| Asian | 0.3% | 1.5% | 5.6% |
| Native American | 1.5% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.2% | 0.3% | 0.2% |
| Other | 1.3% | 2.7% | 0.4% |
| Two or More Races | 4.4% | 2.0% | 3.2% |
| Hispanic | 11.7% | 13.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Topaz Ranch Estates, NV | Gardnerville, NV | United States |
| Married Population | 55.5% | 47.6% | 49.8% |
| Currently Married | 54.9% | 47.2% | 48.0% |
| Married but Separated | 0.6% | 0.4% | 1.8% |
| Single Population | 44.5% | 52.4% | 50.2% |
| Never Married | 19.8% | 24.5% | 33.8% |
| Divorced | 17.6% | 18.4% | 10.8% |
| Widowed | 7.1% | 9.5% | 5.6% |
| space5 | | | |
| Household Size | 2.16 | 2.17 | 2.60 |
| Households | 766 | 2,724 | 124,010,992 |
| Family Households | 458 | 1,638 | 80,755,759 |
| Married couple, w/children | 17.7% | 19.4% | 30.5% |
| Married couple, no children | 64.4% | 49.5% | 42.9% |
| Non Family Households | 308 | 1,086 | 43,255,233 |
| Single householder, w/children | 8.1% | 17.3% | 15.8% |
| Single householder, no children | 9.8% | 13.9% | 10.8% |