| | Highland Heights, KY | Villa Hills, KY | United States |
| Population | 6,896 | 7,331 | 329,725,481 |
| Female Population | 55.4% | 53.9% | 50.5% |
| Male Population | 44.6% | 46.2% | 49.5% |
| Median Age | 23.7 | 47.2 | 38.4 |
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| Population - 2010 | 7,209 | 7,311 | 309,327,143 |
| Population - 2000 | 6,554 | 7,948 | 285,036,114 |
| Population - 1990 | 4,223 | 7,739 | 251,960,433 |
| Pop. 2000 to Now | 7.4% | -5.9% | 15.6% |
| Pop. 1990 to Now | 66.6% | -3.3% | 30.8% |
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| Population Density | 2,632.1 | 2,035.8 | 93.4 |
| Land Area | 2.6 | 3.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Highland Heights, KY | Villa Hills, KY | United States |
| Age 0 to 4 | 2.1% | 5.6% | 5.9% |
| Age 5 to 9 | 4.5% | 2.9% | 6.1% |
| Age 10 to 14 | 2.9% | 7.2% | 6.6% |
| Age 15 to 17 | 2.4% | 3.2% | 3.9% |
| Age 18 to 20 | 28.1% | 4.7% | 4.0% |
| Age 21 to 24 | 13.9% | 3.8% | 5.2% |
| Age 25 to 34 | 10.9% | 9.6% | 13.8% |
| Age 35 to 44 | 6.7% | 9.4% | 12.9% |
| Age 45 to 54 | 7.2% | 12.7% | 12.6% |
| Age 55 to 59 | 4.6% | 6.2% | 6.7% |
| Age 60 to 64 | 4.1% | 10.8% | 6.3% |
| Age 65 to 74 | 6.3% | 17.7% | 9.6% |
| Age 75 to 84 | 5.3% | 4.1% | 4.5% |
| Age 85 and over | 1.0% | 2.1% | 1.9% |
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| Race | | | |
| | Highland Heights, KY | Villa Hills, KY | United States |
| White | 85.3% | 96.8% | 59.4% |
| Black | 6.0% | 0.2% | 12.2% |
| Asian | 3.8% | 0.3% | 5.6% |
| Native American | 0.2% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 3.3% | 1.4% | 3.2% |
| Hispanic | 1.4% | 1.2% | 18.4% |
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| Marriage & Family | | | |
| | Highland Heights, KY | Villa Hills, KY | United States |
| Married Population | 25.7% | 61.0% | 49.8% |
| Currently Married | 24.4% | 60.2% | 48.0% |
| Married but Separated | 1.4% | 0.8% | 1.8% |
| Single Population | 74.3% | 39.0% | 50.2% |
| Never Married | 60.5% | 25.5% | 33.8% |
| Divorced | 8.5% | 9.1% | 10.8% |
| Widowed | 5.2% | 4.3% | 5.6% |
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| Household Size | 2.23 | 2.53 | 2.60 |
| Households | 2,292 | 2,835 | 124,010,992 |
| Family Households | 1,045 | 2,067 | 80,755,759 |
| Married couple, w/children | 31.1% | 33.8% | 30.5% |
| Married couple, no children | 35.1% | 52.4% | 42.9% |
| Non Family Households | 1,247 | 768 | 43,255,233 |
| Single householder, w/children | 14.3% | 5.7% | 15.8% |
| Single householder, no children | 19.5% | 8.1% | 10.8% |