| PEOPLE | Barnesville | St. Louis | United States |
| Population | 4,193 | 319,294 | 308,035,306 |
| Pop. Density | 2,158 | 5,157 | 87 |
| Pop. Change | -2.60% | -8.82% | 8.07% |
| Median Age | 41.4 | 34.1 | 37.3 |
| Households | 1,763 | 142,057 | 116,716,292 |
| Household Size | 2.35 | 2.16 | 2.58 |
| Male Population | 46.22% | 48.28% | 49.27% |
| Female Population | 53.78% | 51.72% | 50.96% |
| Married Population | 45.94% | 25.76% | 47.02% |
| Single Population | 54.06% | 74.24% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 7.04% | 6.60% | 6.56% |
| Age 5 to 9 | 5.53% | 5.44% | 6.61% |
| Age 10 to 14 | 5.46% | 5.30% | 6.71% |
| Age 15 to 17 | 3.41% | 3.81% | 4.21% |
| Age 18 to 20 | 2.67% | 3.25% | 2.95% |
| Age 21 to 24 | 6.22% | 9.04% | 7.01% |
| Age 25 to 34 | 12.50% | 18.06% | 13.33% |
| Age 35 to 44 | 11.35% | 12.60% | 13.33% |
| Age 45 to 49 | 13.55% | 14.03% | 14.61% |
| Age 50 to 54 | 13.55% | 14.03% | 14.61% |
| Age 55 to 59 | 11.81% | 10.84% | 11.84% |
| Age 60 to 64 | 11.81% | 10.84% | 11.84% |
| Age 65 to 74 | 9.25% | 5.54% | 7.05% |
| Age 75 to 84 | 7.18% | 3.79% | 4.24% |
| Age 85 and over | 4.03% | 1.68% | 1.78% |
| RACE | | | |
| White | 96.99% | 43.93% | 72.41% |
| Black | 0.91% | 49.22% | 12.61% |
| Asian | 0.31% | 2.91% | 4.75% |
| American Indian | 0.14% | 0.26% | 0.95% |
| Other | 1.65% | 3.68% | 9.28% |
| Hispanic | 0.17% | 5.02% | 16.35% |
| Non-Hispanic | 99.83% | 94.98% | 83.65% |
| FAMILY | | | |
| Married, w/children | 24.06% | 17.68% | 30.42% |
| Married, no children | 43.00% | 31.17% | 42.46% |
| Single, w/children | 18.94% | 26.33% | 14.39% |
| Single, no children | 14.00% | 24.82% | 12.73% |
| Divorced | 9.76% | 13.01% | 10.62% |
| Separated | 4.58% | 6.13% | 4.97% |
| Widowed | 10.96% | 7.75% | 6.14% |
| Now Married | 46.32% | 25.42% | 46.32% |
| Never Married | 28.37% | 47.68% | 31.95% |
