| | Mountain House, CA | Dublin, CA | United States |
| Population | 23,132 | 69,818 | 329,725,481 |
| Female Population | 52.3% | 50.1% | 50.8% |
| Male Population | 47.7% | 49.9% | 49.2% |
| Median Age | 33.4 | 36.7 | 37.8 |
| space3 | | | |
| Population - 2010 | 7,496 | 46,048 | 309,327,143 |
| Population - 2000 | 795 | 29,973 | 285,036,114 |
| Population - 1990 | 632 | 23,229 | 251,960,433 |
| Pop. 2000 to Now | 1,908.4% | 123.3% | 15.6% |
| Pop. 1990 to Now | 2,426.4% | 188.2% | 30.8% |
| space4 | | | |
| Population Density | 5,000.6 | 4,395.3 | 93.3 |
| Land Area | 3.2 | 15.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Mountain House, CA | Dublin, CA | United States |
| Age 0 to 4 | 9.1% | 7.5% | 6.2% |
| Age 5 to 9 | 14.8% | 8.2% | 6.4% |
| Age 10 to 14 | 10.2% | 6.9% | 6.5% |
| Age 15 to 17 | 3.7% | 3.0% | 3.9% |
| Age 18 to 20 | 2.9% | 2.0% | 4.1% |
| Age 21 to 24 | 2.1% | 3.4% | 5.6% |
| Age 25 to 34 | 9.9% | 15.3% | 13.7% |
| Age 35 to 44 | 24.3% | 19.9% | 12.7% |
| Age 45 to 54 | 11.0% | 15.0% | 13.4% |
| Age 55 to 59 | 4.1% | 5.4% | 6.7% |
| Age 60 to 64 | 3.8% | 4.7% | 6.0% |
| Age 65 to 74 | 3.3% | 5.7% | 8.6% |
| Age 75 to 84 | 0.8% | 2.3% | 4.4% |
| Age 85 and over | 0.1% | 0.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Mountain House, CA | Dublin, CA | United States |
| White | 25.7% | 39.7% | 61.5% |
| Black | 8.7% | 4.6% | 12.3% |
| Asian | 38.6% | 39.9% | 5.3% |
| Native American | 0.0% | 0.3% | 0.7% |
| Hawaiian, Pacific Islander | 0.6% | 0.3% | 0.2% |
| Other | 0.1% | 0.1% | 0.2% |
| Two or More Races | 10.6% | 5.2% | 2.3% |
| Hispanic | 15.7% | 9.8% | 17.6% |
| space2 | | | |
| Marriage & Family | | | |
| | Mountain House, CA | Dublin, CA | United States |
| Married Population | 70.2% | 64.9% | 50.2% |
| Currently Married | 68.4% | 63.3% | 48.2% |
| Married but Separated | 1.7% | 1.6% | 2.0% |
| Single Population | 29.8% | 35.1% | 49.8% |
| Never Married | 18.7% | 24.1% | 33.1% |
| Divorced | 8.4% | 8.1% | 10.9% |
| Widowed | 2.8% | 2.9% | 5.8% |
| space5 | | | |
| Household Size | 3.58 | 2.87 | 2.63 |
| Households | 4,190 | 19,023 | 118,825,921 |
| Family Households | 3,636 | 14,708 | 78,298,703 |
| Married couple, w/children | 58.5% | 48.5% | 31.1% |
| Married couple, no children | 26.3% | 36.0% | 42.3% |
| Non Family Households | 554 | 4,315 | 40,527,218 |
| Single householder, w/children | 12.7% | 10.7% | 16.3% |
| Single householder, no children | 2.6% | 4.7% | 10.3% |