| | Chester, MT | Leland, MS | United States |
| Population | 749 | 4,052 | 329,725,481 |
| Female Population | 57.5% | 53.6% | 50.5% |
| Male Population | 42.5% | 46.4% | 49.5% |
| Median Age | 52.8 | 39.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 855 | 4,470 | 309,327,143 |
| Population - 2000 | 871 | 5,502 | 285,036,114 |
| Population - 1990 | 942 | 6,366 | 251,960,433 |
| Pop. 2000 to Now | -0.1% | -33.5% | 15.6% |
| Pop. 1990 to Now | -7.6% | -42.5% | 30.8% |
| space4 | | | |
| Population Density | 1,538.0 | 1,130.9 | 93.4 |
| Land Area | 0.5 | 3.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Chester, MT | Leland, MS | United States |
| Age 0 to 4 | 3.6% | 7.2% | 5.9% |
| Age 5 to 9 | 7.9% | 6.1% | 6.1% |
| Age 10 to 14 | 5.5% | 5.7% | 6.6% |
| Age 15 to 17 | 1.7% | 3.5% | 3.9% |
| Age 18 to 20 | 4.3% | 1.4% | 4.0% |
| Age 21 to 24 | 1.2% | 5.8% | 5.2% |
| Age 25 to 34 | 5.7% | 13.2% | 13.8% |
| Age 35 to 44 | 14.8% | 14.0% | 12.9% |
| Age 45 to 54 | 6.8% | 12.6% | 12.6% |
| Age 55 to 59 | 4.3% | 4.6% | 6.7% |
| Age 60 to 64 | 8.0% | 8.9% | 6.3% |
| Age 65 to 74 | 9.6% | 9.5% | 9.6% |
| Age 75 to 84 | 11.7% | 5.5% | 4.5% |
| Age 85 and over | 14.8% | 2.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Chester, MT | Leland, MS | United States |
| White | 97.7% | 26.9% | 59.4% |
| Black | 0.0% | 67.3% | 12.2% |
| Asian | 0.0% | 0.2% | 5.6% |
| Native American | 0.7% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.7% | 2.5% | 3.2% |
| Hispanic | 0.9% | 3.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Chester, MT | Leland, MS | United States |
| Married Population | 56.1% | 38.5% | 49.8% |
| Currently Married | 53.9% | 35.0% | 48.0% |
| Married but Separated | 2.3% | 3.5% | 1.8% |
| Single Population | 43.9% | 61.5% | 50.2% |
| Never Married | 18.3% | 40.4% | 33.8% |
| Divorced | 9.0% | 13.9% | 10.8% |
| Widowed | 16.6% | 7.3% | 5.6% |
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| Household Size | 2.02 | 2.31 | 2.60 |
| Households | 361 | 1,754 | 124,010,992 |
| Family Households | 206 | 1,000 | 80,755,759 |
| Married couple, w/children | 24.3% | 18.2% | 30.5% |
| Married couple, no children | 57.3% | 33.5% | 42.9% |
| Non Family Households | 155 | 754 | 43,255,233 |
| Single householder, w/children | 8.3% | 24.3% | 15.8% |
| Single householder, no children | 10.2% | 24.0% | 10.8% |