| | Mulga, AL | North Johns, AL | United States |
| Population | 682 | 160 | 329,725,481 |
| Female Population | 50.4% | 63.1% | 50.5% |
| Male Population | 49.6% | 36.9% | 49.5% |
| Median Age | 47.1 | 56 | 38.4 |
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| Population - 2010 | 827 | 145 | 309,327,143 |
| Population - 2000 | 973 | 142 | 285,036,114 |
| Population - 1990 | 261 | 177 | 251,960,433 |
| Pop. 2000 to Now | -18.0% | 0.7% | 15.6% |
| Pop. 1990 to Now | 205.8% | -19.2% | 30.8% |
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| Population Density | 1,062.3 | 788.2 | 93.4 |
| Land Area | 0.6 | 0.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Mulga, AL | North Johns, AL | United States |
| Age 0 to 4 | 8.5% | 8.1% | 5.9% |
| Age 5 to 9 | 5.6% | 0.6% | 6.1% |
| Age 10 to 14 | 1.9% | 1.3% | 6.6% |
| Age 15 to 17 | 2.9% | 2.5% | 3.9% |
| Age 18 to 20 | 3.1% | 0.6% | 4.0% |
| Age 21 to 24 | 3.4% | 5.0% | 5.2% |
| Age 25 to 34 | 11.1% | 7.5% | 13.8% |
| Age 35 to 44 | 11.3% | 18.8% | 12.9% |
| Age 45 to 54 | 11.3% | 4.4% | 12.6% |
| Age 55 to 59 | 9.4% | 8.1% | 6.7% |
| Age 60 to 64 | 10.1% | 11.9% | 6.3% |
| Age 65 to 74 | 13.3% | 11.3% | 9.6% |
| Age 75 to 84 | 5.3% | 18.1% | 4.5% |
| Age 85 and over | 2.8% | 1.9% | 1.9% |
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| Race | | | |
| | Mulga, AL | North Johns, AL | United States |
| White | 83.0% | 66.3% | 59.4% |
| Black | 13.1% | 32.5% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 3.1% | 0.0% | 3.2% |
| Hispanic | 0.9% | 1.3% | 18.4% |
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| Marriage & Family | | | |
| | Mulga, AL | North Johns, AL | United States |
| Married Population | 41.5% | 47.9% | 49.8% |
| Currently Married | 39.8% | 46.5% | 48.0% |
| Married but Separated | 1.7% | 1.4% | 1.8% |
| Single Population | 58.5% | 52.1% | 50.2% |
| Never Married | 28.4% | 22.2% | 33.8% |
| Divorced | 19.9% | 22.9% | 10.8% |
| Widowed | 10.1% | 6.9% | 5.6% |
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| Household Size | 2.18 | 2.16 | 2.60 |
| Households | 313 | 74 | 124,010,992 |
| Family Households | 198 | 42 | 80,755,759 |
| Married couple, w/children | 14.1% | 7.1% | 30.5% |
| Married couple, no children | 36.9% | 69.0% | 42.9% |
| Non Family Households | 115 | 32 | 43,255,233 |
| Single householder, w/children | 22.7% | 21.4% | 15.8% |
| Single householder, no children | 26.3% | 2.4% | 10.8% |