| PEOPLE | Pierre | Wahpeton | United States |
| Population | 13,646 | 7,766 | 308,035,306 |
| Pop. Density | 1,045 | 1,467 | 87 |
| Pop. Change | -0.96% | -10.09% | 8.07% |
| Median Age | 39.3 | 31.3 | 37.3 |
| Households | 5,778 | 3,151 | 116,716,292 |
| Household Size | 2.23 | 2.18 | 2.58 |
| Male Population | 47.79% | 51.62% | 49.27% |
| Female Population | 52.21% | 48.38% | 50.96% |
| Married Population | 54.63% | 41.16% | 47.02% |
| Single Population | 45.37% | 58.84% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.79% | 6.67% | 6.56% |
| Age 5 to 9 | 6.09% | 4.98% | 6.61% |
| Age 10 to 14 | 6.29% | 5.25% | 6.71% |
| Age 15 to 17 | 3.74% | 3.41% | 4.21% |
| Age 18 to 20 | 2.21% | 7.80% | 2.95% |
| Age 21 to 24 | 5.32% | 14.33% | 7.01% |
| Age 25 to 34 | 14.25% | 11.23% | 13.33% |
| Age 35 to 44 | 12.55% | 9.31% | 13.33% |
| Age 45 to 49 | 15.26% | 13.16% | 14.61% |
| Age 50 to 54 | 15.26% | 13.16% | 14.61% |
| Age 55 to 59 | 13.58% | 11.23% | 11.84% |
| Age 60 to 64 | 13.58% | 11.23% | 11.84% |
| Age 65 to 74 | 6.71% | 5.19% | 7.05% |
| Age 75 to 84 | 4.79% | 4.60% | 4.24% |
| Age 85 and over | 2.42% | 2.83% | 1.78% |
| RACE | | | |
| White | 85.09% | 92.65% | 72.41% |
| Black | 0.51% | 1.26% | 12.61% |
| Asian | 0.60% | 0.79% | 4.75% |
| American Indian | 10.95% | 3.08% | 0.95% |
| Other | 2.85% | 2.23% | 9.28% |
| Hispanic | 1.55% | 0.41% | 16.35% |
| Non-Hispanic | 98.45% | 99.59% | 83.65% |
| FAMILY | | | |
| Married, w/children | 28.85% | 29.41% | 30.42% |
| Married, no children | 47.42% | 45.37% | 42.46% |
| Single, w/children | 16.63% | 17.41% | 14.39% |
| Single, no children | 7.10% | 7.80% | 12.73% |
| Divorced | 11.23% | 6.60% | 10.62% |
| Separated | 3.60% | 8.16% | 4.97% |
| Widowed | 6.58% | 6.80% | 6.14% |
| Now Married | 54.84% | 41.85% | 46.32% |
| Never Married | 23.75% | 36.59% | 31.95% |
