| | Liberty, MS | Belmont, MS | United States |
| Population | 833 | 2,537 | 329,725,481 |
| Female Population | 52.5% | 55.3% | 50.5% |
| Male Population | 47.5% | 44.7% | 49.5% |
| Median Age | 43.2 | 36.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 700 | 2,031 | 309,327,143 |
| Population - 2000 | 633 | 1,961 | 285,036,114 |
| Population - 1990 | 624 | 1,554 | 251,960,433 |
| Pop. 2000 to Now | 0.2% | 0.8% | 15.6% |
| Pop. 1990 to Now | 1.6% | 27.2% | 30.8% |
| space4 | | | |
| Population Density | 404.2 | 536.5 | 93.4 |
| Land Area | 2.1 | 4.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Liberty, MS | Belmont, MS | United States |
| Age 0 to 4 | 5.4% | 9.3% | 5.9% |
| Age 5 to 9 | 4.3% | 3.0% | 6.1% |
| Age 10 to 14 | 7.6% | 11.7% | 6.6% |
| Age 15 to 17 | 8.9% | 5.5% | 3.9% |
| Age 18 to 20 | 0.2% | 3.7% | 4.0% |
| Age 21 to 24 | 1.2% | 6.9% | 5.2% |
| Age 25 to 34 | 9.8% | 9.0% | 13.8% |
| Age 35 to 44 | 12.8% | 10.9% | 12.9% |
| Age 45 to 54 | 16.1% | 19.2% | 12.6% |
| Age 55 to 59 | 1.3% | 3.3% | 6.7% |
| Age 60 to 64 | 4.4% | 5.0% | 6.3% |
| Age 65 to 74 | 13.0% | 6.4% | 9.6% |
| Age 75 to 84 | 8.2% | 5.0% | 4.5% |
| Age 85 and over | 6.7% | 1.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Liberty, MS | Belmont, MS | United States |
| White | 63.1% | 84.4% | 59.4% |
| Black | 31.2% | 0.0% | 12.2% |
| Asian | 0.0% | 0.7% | 5.6% |
| Native American | 0.2% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 5.3% | 0.9% | 3.2% |
| Hispanic | 0.1% | 14.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Liberty, MS | Belmont, MS | United States |
| Married Population | 45.3% | 47.5% | 49.8% |
| Currently Married | 42.1% | 45.9% | 48.0% |
| Married but Separated | 3.2% | 1.6% | 1.8% |
| Single Population | 54.7% | 52.5% | 50.2% |
| Never Married | 29.0% | 34.5% | 33.8% |
| Divorced | 14.8% | 12.1% | 10.8% |
| Widowed | 10.9% | 5.9% | 5.6% |
| space5 | | | |
| Household Size | 2.29 | 2.38 | 2.60 |
| Households | 322 | 1,065 | 124,010,992 |
| Family Households | 178 | 585 | 80,755,759 |
| Married couple, w/children | 42.1% | 30.8% | 30.5% |
| Married couple, no children | 33.1% | 45.0% | 42.9% |
| Non Family Households | 144 | 480 | 43,255,233 |
| Single householder, w/children | 15.2% | 17.3% | 15.8% |
| Single householder, no children | 9.6% | 7.0% | 10.8% |