| | Irvine, KY | Mount Vernon, KY | United States |
| Population | 2,725 | 2,178 | 329,725,481 |
| Female Population | 53.7% | 56.2% | 50.5% |
| Male Population | 46.3% | 43.8% | 49.5% |
| Median Age | 41.9 | 43.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,478 | 2,465 | 309,327,143 |
| Population - 2000 | 2,843 | 2,592 | 285,036,114 |
| Population - 1990 | 2,836 | 2,654 | 251,960,433 |
| Pop. 2000 to Now | -19.5% | -8.4% | 15.6% |
| Pop. 1990 to Now | -19.3% | -10.5% | 30.8% |
| space4 | | | |
| Population Density | 1,959.0 | 1,059.3 | 93.4 |
| Land Area | 1.4 | 2.1 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Irvine, KY | Mount Vernon, KY | United States |
| Age 0 to 4 | 5.6% | 6.3% | 5.9% |
| Age 5 to 9 | 12.7% | 4.6% | 6.1% |
| Age 10 to 14 | 3.3% | 5.7% | 6.6% |
| Age 15 to 17 | 3.6% | 4.6% | 3.9% |
| Age 18 to 20 | 1.9% | 4.6% | 4.0% |
| Age 21 to 24 | 2.6% | 2.1% | 5.2% |
| Age 25 to 34 | 9.7% | 11.2% | 13.8% |
| Age 35 to 44 | 14.2% | 11.3% | 12.9% |
| Age 45 to 54 | 11.2% | 11.4% | 12.6% |
| Age 55 to 59 | 10.0% | 9.1% | 6.7% |
| Age 60 to 64 | 5.7% | 7.4% | 6.3% |
| Age 65 to 74 | 12.4% | 12.5% | 9.6% |
| Age 75 to 84 | 3.8% | 6.6% | 4.5% |
| Age 85 and over | 3.3% | 2.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Irvine, KY | Mount Vernon, KY | United States |
| White | 96.1% | 90.5% | 59.4% |
| Black | 0.0% | 0.5% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.5% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.3% | 8.7% | 3.2% |
| Hispanic | 3.1% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Irvine, KY | Mount Vernon, KY | United States |
| Married Population | 50.0% | 47.4% | 49.8% |
| Currently Married | 47.1% | 43.5% | 48.0% |
| Married but Separated | 3.0% | 3.9% | 1.8% |
| Single Population | 50.0% | 52.6% | 50.2% |
| Never Married | 23.9% | 25.1% | 33.8% |
| Divorced | 18.2% | 17.5% | 10.8% |
| Widowed | 7.8% | 10.0% | 5.6% |
| space5 | | | |
| Household Size | 2.39 | 2.44 | 2.60 |
| Households | 1,130 | 810 | 124,010,992 |
| Family Households | 560 | 500 | 80,755,759 |
| Married couple, w/children | 35.0% | 13.4% | 30.5% |
| Married couple, no children | 39.3% | 42.2% | 42.9% |
| Non Family Households | 570 | 310 | 43,255,233 |
| Single householder, w/children | 16.3% | 32.8% | 15.8% |
| Single householder, no children | 9.5% | 11.6% | 10.8% |