| | Norphlet, AR | Smackover, AR | United States |
| Population | 625 | 2,000 | 329,725,481 |
| Female Population | 54.6% | 52.8% | 50.5% |
| Male Population | 45.4% | 47.3% | 49.5% |
| Median Age | 32.1 | 51.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 847 | 1,866 | 309,327,143 |
| Population - 2000 | 822 | 2,005 | 285,036,114 |
| Population - 1990 | 706 | 2,232 | 251,960,433 |
| Pop. 2000 to Now | -6.1% | -17.0% | 15.6% |
| Pop. 1990 to Now | 9.4% | -25.4% | 30.8% |
| space4 | | | |
| Population Density | 305.8 | 460.0 | 93.4 |
| Land Area | 2.0 | 4.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Norphlet, AR | Smackover, AR | United States |
| Age 0 to 4 | 11.0% | 4.0% | 5.9% |
| Age 5 to 9 | 8.2% | 6.3% | 6.1% |
| Age 10 to 14 | 7.0% | 4.1% | 6.6% |
| Age 15 to 17 | 2.7% | 3.8% | 3.9% |
| Age 18 to 20 | 2.6% | 2.1% | 4.0% |
| Age 21 to 24 | 2.1% | 4.9% | 5.2% |
| Age 25 to 34 | 17.4% | 5.2% | 13.8% |
| Age 35 to 44 | 15.7% | 14.8% | 12.9% |
| Age 45 to 54 | 11.4% | 11.2% | 12.6% |
| Age 55 to 59 | 6.7% | 9.4% | 6.7% |
| Age 60 to 64 | 4.0% | 11.4% | 6.3% |
| Age 65 to 74 | 7.5% | 16.5% | 9.6% |
| Age 75 to 84 | 3.2% | 3.2% | 4.5% |
| Age 85 and over | 0.5% | 3.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Norphlet, AR | Smackover, AR | United States |
| White | 85.6% | 71.4% | 59.4% |
| Black | 7.2% | 27.9% | 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 | 4.2% | 0.8% | 3.2% |
| Hispanic | 3.0% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Norphlet, AR | Smackover, AR | United States |
| Married Population | 50.8% | 47.7% | 49.8% |
| Currently Married | 47.9% | 46.7% | 48.0% |
| Married but Separated | 2.8% | 0.9% | 1.8% |
| Single Population | 49.2% | 52.3% | 50.2% |
| Never Married | 31.7% | 19.8% | 33.8% |
| Divorced | 8.9% | 21.6% | 10.8% |
| Widowed | 8.7% | 11.0% | 5.6% |
| space5 | | | |
| Household Size | 3.05 | 2.51 | 2.60 |
| Households | 205 | 796 | 124,010,992 |
| Family Households | 154 | 555 | 80,755,759 |
| Married couple, w/children | 31.2% | 24.3% | 30.5% |
| Married couple, no children | 34.4% | 40.7% | 42.9% |
| Non Family Households | 51 | 241 | 43,255,233 |
| Single householder, w/children | 17.5% | 15.1% | 15.8% |
| Single householder, no children | 16.9% | 19.8% | 10.8% |