| | Iuka, MS | Vicksburg, MS | United States |
| Population | 3,084 | 21,748 | 329,725,481 |
| Female Population | 54.7% | 51.8% | 50.5% |
| Male Population | 45.3% | 48.2% | 49.5% |
| Median Age | 40.3 | 37.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,036 | 23,873 | 309,327,143 |
| Population - 2000 | 3,059 | 26,407 | 285,036,114 |
| Population - 1990 | 3,122 | 20,908 | 251,960,433 |
| Pop. 2000 to Now | -4.3% | -19.2% | 15.6% |
| Pop. 1990 to Now | -6.2% | 2.1% | 30.8% |
| space4 | | | |
| Population Density | 318.1 | 659.4 | 93.4 |
| Land Area | 9.7 | 33.0 | 3,531,905.4 |
| Water Area | 0.0 | 2.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Iuka, MS | Vicksburg, MS | United States |
| Age 0 to 4 | 9.2% | 6.0% | 5.9% |
| Age 5 to 9 | 4.1% | 7.0% | 6.1% |
| Age 10 to 14 | 5.8% | 8.5% | 6.6% |
| Age 15 to 17 | 2.7% | 4.8% | 3.9% |
| Age 18 to 20 | 3.9% | 3.9% | 4.0% |
| Age 21 to 24 | 3.7% | 3.7% | 5.2% |
| Age 25 to 34 | 13.4% | 12.0% | 13.8% |
| Age 35 to 44 | 12.5% | 14.1% | 12.9% |
| Age 45 to 54 | 11.0% | 11.0% | 12.6% |
| Age 55 to 59 | 7.7% | 5.8% | 6.7% |
| Age 60 to 64 | 4.1% | 8.1% | 6.3% |
| Age 65 to 74 | 8.9% | 9.4% | 9.6% |
| Age 75 to 84 | 9.5% | 4.0% | 4.5% |
| Age 85 and over | 3.5% | 1.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Iuka, MS | Vicksburg, MS | United States |
| White | 93.6% | 27.0% | 59.4% |
| Black | 4.9% | 68.8% | 12.2% |
| Asian | 0.0% | 0.2% | 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 | 1.4% | 1.2% | 3.2% |
| Hispanic | 0.1% | 2.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Iuka, MS | Vicksburg, MS | United States |
| Married Population | 51.5% | 33.1% | 49.8% |
| Currently Married | 48.9% | 30.0% | 48.0% |
| Married but Separated | 2.7% | 3.1% | 1.8% |
| Single Population | 48.5% | 66.9% | 50.2% |
| Never Married | 25.1% | 46.1% | 33.8% |
| Divorced | 12.3% | 12.8% | 10.8% |
| Widowed | 11.0% | 8.1% | 5.6% |
| space5 | | | |
| Household Size | 2.28 | 2.50 | 2.60 |
| Households | 1,256 | 8,479 | 124,010,992 |
| Family Households | 814 | 4,597 | 80,755,759 |
| Married couple, w/children | 28.5% | 17.6% | 30.5% |
| Married couple, no children | 38.2% | 33.8% | 42.9% |
| Non Family Households | 442 | 3,882 | 43,255,233 |
| Single householder, w/children | 25.7% | 29.8% | 15.8% |
| Single householder, no children | 7.6% | 18.7% | 10.8% |