| PEOPLE | Centralia | Spanish Fort | United States |
| Population | 16,336 | 6,798 | 308,035,306 |
| Pop. Density | 2,203 | 237 | 87 |
| Pop. Change | 8.66% | 37.05% | 8.07% |
| Median Age | 34.8 | 41.4 | 37.3 |
| Households | 6,640 | 2,861 | 116,716,292 |
| Household Size | 2.46 | 2.54 | 2.58 |
| Male Population | 48.34% | 48.90% | 49.27% |
| Female Population | 51.66% | 51.10% | 50.96% |
| Married Population | 43.32% | 64.50% | 47.02% |
| Single Population | 56.68% | 35.50% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 7.96% | 4.96% | 6.56% |
| Age 5 to 9 | 6.88% | 6.81% | 6.61% |
| Age 10 to 14 | 6.26% | 6.72% | 6.71% |
| Age 15 to 17 | 3.61% | 4.49% | 4.21% |
| Age 18 to 20 | 2.99% | 2.19% | 2.95% |
| Age 21 to 24 | 7.64% | 5.22% | 7.01% |
| Age 25 to 34 | 14.89% | 10.74% | 13.33% |
| Age 35 to 44 | 10.79% | 13.67% | 13.33% |
| Age 45 to 49 | 11.96% | 16.43% | 14.61% |
| Age 50 to 54 | 11.96% | 16.43% | 14.61% |
| Age 55 to 59 | 10.37% | 11.99% | 11.84% |
| Age 60 to 64 | 10.37% | 11.99% | 11.84% |
| Age 65 to 74 | 6.77% | 7.58% | 7.05% |
| Age 75 to 84 | 6.13% | 5.63% | 4.24% |
| Age 85 and over | 3.74% | 3.57% | 1.78% |
| RACE | | | |
| White | 85.09% | 90.95% | 72.41% |
| Black | 0.65% | 4.77% | 12.61% |
| Asian | 1.00% | 1.41% | 4.75% |
| American Indian | 1.43% | 0.57% | 0.95% |
| Other | 11.83% | 2.29% | 9.28% |
| Hispanic | 3.20% | 0.00% | 16.35% |
| Non-Hispanic | 96.80% | 100.00% | 83.65% |
| FAMILY | | | |
| Married, w/children | 25.65% | 32.67% | 30.42% |
| Married, no children | 39.00% | 48.01% | 42.46% |
| Single, w/children | 21.93% | 10.84% | 14.39% |
| Single, no children | 13.42% | 8.48% | 12.73% |
| Divorced | 16.07% | 5.58% | 10.62% |
| Separated | 5.41% | 2.18% | 4.97% |
| Widowed | 7.93% | 7.26% | 6.14% |
| Now Married | 44.14% | 65.13% | 46.32% |
| Never Married | 26.44% | 19.86% | 31.95% |
