| | Nashville, AR | Magnolia, AR | United States |
| Population | 4,193 | 11,205 | 329,725,481 |
| Female Population | 56.1% | 53.5% | 50.5% |
| Male Population | 44.0% | 46.5% | 49.5% |
| Median Age | 38.9 | 28.7 | 38.4 |
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| Population - 2010 | 4,569 | 11,780 | 309,327,143 |
| Population - 2000 | 4,878 | 10,858 | 285,036,114 |
| Population - 1990 | 4,639 | 11,151 | 251,960,433 |
| Pop. 2000 to Now | -12.1% | 5.4% | 15.6% |
| Pop. 1990 to Now | -7.5% | 2.6% | 30.8% |
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| Population Density | 768.8 | 848.4 | 93.4 |
| Land Area | 5.5 | 13.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Nashville, AR | Magnolia, AR | United States |
| Age 0 to 4 | 8.6% | 6.7% | 5.9% |
| Age 5 to 9 | 6.5% | 5.1% | 6.1% |
| Age 10 to 14 | 5.3% | 7.2% | 6.6% |
| Age 15 to 17 | 3.5% | 3.5% | 3.9% |
| Age 18 to 20 | 4.3% | 13.0% | 4.0% |
| Age 21 to 24 | 5.7% | 8.9% | 5.2% |
| Age 25 to 34 | 10.1% | 12.6% | 13.8% |
| Age 35 to 44 | 16.0% | 10.9% | 12.9% |
| Age 45 to 54 | 9.9% | 7.5% | 12.6% |
| Age 55 to 59 | 6.6% | 3.5% | 6.7% |
| Age 60 to 64 | 7.3% | 3.5% | 6.3% |
| Age 65 to 74 | 9.8% | 9.4% | 9.6% |
| Age 75 to 84 | 5.2% | 4.7% | 4.5% |
| Age 85 and over | 1.2% | 3.6% | 1.9% |
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| Race | | | |
| | Nashville, AR | Magnolia, AR | United States |
| White | 43.5% | 49.4% | 59.4% |
| Black | 33.1% | 43.7% | 12.2% |
| Asian | 2.0% | 0.8% | 5.6% |
| Native American | 0.4% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 0.7% | 1.0% | 3.2% |
| Hispanic | 20.2% | 4.7% | 18.4% |
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| Marriage & Family | | | |
| | Nashville, AR | Magnolia, AR | United States |
| Married Population | 44.2% | 39.0% | 49.8% |
| Currently Married | 40.6% | 35.2% | 48.0% |
| Married but Separated | 3.6% | 3.8% | 1.8% |
| Single Population | 55.8% | 61.0% | 50.2% |
| Never Married | 31.1% | 41.1% | 33.8% |
| Divorced | 15.0% | 11.9% | 10.8% |
| Widowed | 9.7% | 8.1% | 5.6% |
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| Household Size | 2.38 | 2.69 | 2.60 |
| Households | 1,738 | 3,516 | 124,010,992 |
| Family Households | 1,036 | 2,039 | 80,755,759 |
| Married couple, w/children | 23.5% | 27.7% | 30.5% |
| Married couple, no children | 41.1% | 41.8% | 42.9% |
| Non Family Households | 702 | 1,477 | 43,255,233 |
| Single householder, w/children | 20.7% | 24.7% | 15.8% |
| Single householder, no children | 14.8% | 5.8% | 10.8% |