| PEOPLE | Okemos | Roswell | United States |
| Population | 21,369 | 88,346 | 308,035,306 |
| Pop. Density | 1,275 | 2,170 | 87 |
| Pop. Change | -0.02% | 7.80% | 8.07% |
| Median Age | 37.7 | 37.5 | 37.3 |
| Households | 8,824 | 33,945 | 116,716,292 |
| Household Size | 2.41 | 2.57 | 2.58 |
| Male Population | 48.12% | 49.29% | 49.27% |
| Female Population | 51.88% | 50.71% | 50.96% |
| Married Population | 50.79% | 51.75% | 47.02% |
| Single Population | 49.21% | 48.25% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 4.51% | 7.37% | 6.56% |
| Age 5 to 9 | 5.68% | 7.33% | 6.61% |
| Age 10 to 14 | 6.54% | 6.86% | 6.71% |
| Age 15 to 17 | 4.62% | 3.99% | 4.21% |
| Age 18 to 20 | 2.35% | 1.86% | 2.95% |
| Age 21 to 24 | 12.25% | 4.83% | 7.01% |
| Age 25 to 34 | 11.34% | 13.75% | 13.33% |
| Age 35 to 44 | 10.81% | 15.73% | 13.33% |
| Age 45 to 49 | 14.51% | 15.52% | 14.61% |
| Age 50 to 54 | 14.51% | 15.52% | 14.61% |
| Age 55 to 59 | 15.05% | 12.36% | 11.84% |
| Age 60 to 64 | 15.05% | 12.36% | 11.84% |
| Age 65 to 74 | 6.65% | 5.87% | 7.05% |
| Age 75 to 84 | 3.75% | 3.03% | 4.24% |
| Age 85 and over | 1.92% | 1.49% | 1.78% |
| RACE | | | |
| White | 76.49% | 74.72% | 72.41% |
| Black | 5.11% | 11.74% | 12.61% |
| Asian | 14.39% | 4.04% | 4.75% |
| American Indian | 0.33% | 0.30% | 0.95% |
| Other | 3.68% | 9.21% | 9.28% |
| Hispanic | 1.12% | 7.55% | 16.35% |
| Non-Hispanic | 98.88% | 92.45% | 83.65% |
| FAMILY | | | |
| Married, w/children | 35.76% | 37.22% | 30.42% |
| Married, no children | 48.39% | 41.60% | 42.46% |
| Single, w/children | 8.84% | 12.25% | 14.39% |
| Single, no children | 7.00% | 8.93% | 12.73% |
| Divorced | 8.38% | 10.87% | 10.62% |
| Separated | 1.78% | 3.20% | 4.97% |
| Widowed | 3.35% | 3.19% | 6.14% |
| Now Married | 50.72% | 52.57% | 46.32% |
| Never Married | 35.78% | 30.18% | 31.95% |