| | Arden Hills, MN | Mendota Heights, MN | United States |
| Population | 9,868 | 11,681 | 329,725,481 |
| Female Population | 52.8% | 50.3% | 50.5% |
| Male Population | 47.2% | 49.7% | 49.5% |
| Median Age | 33.7 | 46.5 | 38.4 |
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| Population - 2010 | 9,565 | 11,080 | 309,327,143 |
| Population - 2000 | 9,652 | 11,434 | 285,036,114 |
| Population - 1990 | 9,199 | 9,431 | 251,960,433 |
| Pop. 2000 to Now | 5.6% | 0.0% | 15.6% |
| Pop. 1990 to Now | 10.8% | 21.2% | 30.8% |
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| Population Density | 1,157.5 | 1,284.9 | 93.4 |
| Land Area | 8.5 | 9.1 | 3,531,905.4 |
| Water Area | 1.1 | 1.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Arden Hills, MN | Mendota Heights, MN | United States |
| Age 0 to 4 | 5.6% | 5.7% | 5.9% |
| Age 5 to 9 | 5.4% | 4.3% | 6.1% |
| Age 10 to 14 | 5.5% | 6.1% | 6.6% |
| Age 15 to 17 | 3.5% | 5.8% | 3.9% |
| Age 18 to 20 | 16.3% | 4.4% | 4.0% |
| Age 21 to 24 | 6.3% | 3.2% | 5.2% |
| Age 25 to 34 | 8.9% | 8.6% | 13.8% |
| Age 35 to 44 | 11.0% | 10.7% | 12.9% |
| Age 45 to 54 | 9.6% | 11.5% | 12.6% |
| Age 55 to 59 | 4.4% | 7.6% | 6.7% |
| Age 60 to 64 | 5.3% | 8.4% | 6.3% |
| Age 65 to 74 | 10.1% | 14.0% | 9.6% |
| Age 75 to 84 | 4.2% | 7.2% | 4.5% |
| Age 85 and over | 3.8% | 2.4% | 1.9% |
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| Race | | | |
| | Arden Hills, MN | Mendota Heights, MN | United States |
| White | 81.9% | 83.9% | 59.4% |
| Black | 1.4% | 0.6% | 12.2% |
| Asian | 5.3% | 2.9% | 5.6% |
| Native American | 0.1% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 4.0% | 9.6% | 3.2% |
| Hispanic | 7.3% | 3.0% | 18.4% |
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| Marriage & Family | | | |
| | Arden Hills, MN | Mendota Heights, MN | United States |
| Married Population | 48.9% | 61.3% | 49.8% |
| Currently Married | 48.4% | 60.2% | 48.0% |
| Married but Separated | 0.5% | 1.1% | 1.8% |
| Single Population | 51.1% | 38.7% | 50.2% |
| Never Married | 42.6% | 26.3% | 33.8% |
| Divorced | 5.3% | 8.7% | 10.8% |
| Widowed | 3.2% | 3.6% | 5.6% |
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| Household Size | 2.77 | 2.47 | 2.60 |
| Households | 2,837 | 4,694 | 124,010,992 |
| Family Households | 2,204 | 3,405 | 80,755,759 |
| Married couple, w/children | 38.6% | 28.8% | 30.5% |
| Married couple, no children | 48.8% | 57.3% | 42.9% |
| Non Family Households | 633 | 1,289 | 43,255,233 |
| Single householder, w/children | 7.5% | 10.7% | 15.8% |
| Single householder, no children | 5.1% | 3.1% | 10.8% |