| | Elon, NC | Millbrook, AL | United States |
| Population | 11,059 | 16,675 | 329,725,481 |
| Female Population | 56.8% | 55.4% | 50.5% |
| Male Population | 43.2% | 44.6% | 49.5% |
| Median Age | 21.9 | 35.8 | 38.4 |
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| Population - 2010 | 9,384 | 15,064 | 309,327,143 |
| Population - 2000 | 6,910 | 10,386 | 285,036,114 |
| Population - 1990 | 5,436 | 6,050 | 251,960,433 |
| Pop. 2000 to Now | 76.4% | 55.2% | 15.6% |
| Pop. 1990 to Now | 124.2% | 166.4% | 30.8% |
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| Population Density | 2,782.8 | 1,274.8 | 93.4 |
| Land Area | 4.0 | 13.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.3 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Elon, NC | Millbrook, AL | United States |
| Age 0 to 4 | 3.7% | 5.8% | 5.9% |
| Age 5 to 9 | 1.2% | 8.2% | 6.1% |
| Age 10 to 14 | 3.7% | 7.1% | 6.6% |
| Age 15 to 17 | 4.3% | 3.4% | 3.9% |
| Age 18 to 20 | 29.5% | 3.3% | 4.0% |
| Age 21 to 24 | 15.8% | 8.2% | 5.2% |
| Age 25 to 34 | 3.2% | 12.8% | 13.8% |
| Age 35 to 44 | 8.9% | 12.7% | 12.9% |
| Age 45 to 54 | 7.0% | 12.3% | 12.6% |
| Age 55 to 59 | 4.8% | 6.6% | 6.7% |
| Age 60 to 64 | 3.4% | 5.9% | 6.3% |
| Age 65 to 74 | 5.6% | 7.2% | 9.6% |
| Age 75 to 84 | 5.0% | 5.5% | 4.5% |
| Age 85 and over | 3.9% | 0.9% | 1.9% |
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| Race | | | |
| | Elon, NC | Millbrook, AL | United States |
| White | 81.7% | 63.0% | 59.4% |
| Black | 7.0% | 27.0% | 12.2% |
| Asian | 4.2% | 2.2% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.0% | 2.9% | 3.2% |
| Hispanic | 5.1% | 4.9% | 18.4% |
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| Marriage & Family | | | |
| | Elon, NC | Millbrook, AL | United States |
| Married Population | 32.4% | 50.2% | 49.8% |
| Currently Married | 31.9% | 47.9% | 48.0% |
| Married but Separated | 0.5% | 2.4% | 1.8% |
| Single Population | 67.6% | 49.8% | 50.2% |
| Never Married | 59.1% | 30.6% | 33.8% |
| Divorced | 2.4% | 11.0% | 10.8% |
| Widowed | 6.1% | 8.1% | 5.6% |
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| Household Size | 2.61 | 2.60 | 2.60 |
| Households | 3,027 | 6,420 | 124,010,992 |
| Family Households | 1,781 | 4,450 | 80,755,759 |
| Married couple, w/children | 42.8% | 24.9% | 30.5% |
| Married couple, no children | 47.6% | 39.2% | 42.9% |
| Non Family Households | 1,246 | 1,970 | 43,255,233 |
| Single householder, w/children | 3.5% | 23.7% | 15.8% |
| Single householder, no children | 6.1% | 12.2% | 10.8% |