| PEOPLE | Poplar Bluff | Boulder | United States |
| Population | 17,023 | 97,385 | 308,035,306 |
| Pop. Density | 1,319 | 3,948 | 87 |
| Pop. Change | 1.21% | 2.41% | 8.07% |
| Median Age | 38.4 | 28.8 | 37.3 |
| Households | 7,181 | 41,302 | 116,716,292 |
| Household Size | 2.3 | 2.16 | 2.58 |
| Male Population | 45.88% | 51.35% | 49.27% |
| Female Population | 54.12% | 48.65% | 50.96% |
| Married Population | 40.70% | 29.68% | 47.02% |
| Single Population | 59.30% | 70.32% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 7.50% | 4.06% | 6.56% |
| Age 5 to 9 | 7.26% | 3.97% | 6.61% |
| Age 10 to 14 | 6.06% | 3.65% | 6.71% |
| Age 15 to 17 | 3.35% | 2.21% | 4.21% |
| Age 18 to 20 | 2.82% | 8.76% | 2.95% |
| Age 21 to 24 | 6.70% | 20.35% | 7.01% |
| Age 25 to 34 | 12.34% | 15.99% | 13.33% |
| Age 35 to 44 | 11.23% | 11.73% | 13.33% |
| Age 45 to 49 | 12.72% | 10.79% | 14.61% |
| Age 50 to 54 | 12.72% | 10.79% | 14.61% |
| Age 55 to 59 | 11.83% | 9.57% | 11.84% |
| Age 60 to 64 | 11.83% | 9.57% | 11.84% |
| Age 65 to 74 | 8.40% | 4.60% | 7.05% |
| Age 75 to 84 | 6.93% | 2.73% | 4.24% |
| Age 85 and over | 2.86% | 1.61% | 1.78% |
| RACE | | | |
| White | 84.79% | 88.00% | 72.41% |
| Black | 9.97% | 0.90% | 12.61% |
| Asian | 0.89% | 4.73% | 4.75% |
| American Indian | 0.53% | 0.44% | 0.95% |
| Other | 3.81% | 5.93% | 9.28% |
| Hispanic | 0.57% | 12.31% | 16.35% |
| Non-Hispanic | 99.43% | 87.69% | 83.65% |
| FAMILY | | | |
| Married, w/children | 22.05% | 34.21% | 30.42% |
| Married, no children | 38.69% | 45.48% | 42.46% |
| Single, w/children | 23.64% | 11.18% | 14.39% |
| Single, no children | 15.62% | 9.13% | 12.73% |
| Divorced | 18.30% | 10.00% | 10.62% |
| Separated | 5.70% | 4.73% | 4.97% |
| Widowed | 10.38% | 3.36% | 6.14% |
| Now Married | 40.76% | 29.69% | 46.32% |
| Never Married | 24.85% | 52.23% | 31.95% |
