| PEOPLE | Spring | Downey | United States |
| Population | 54,298 | 111,772 | 308,035,306 |
| Pop. Density | 2,341 | 9,008 | 87 |
| Pop. Change | 49.70% | 3.81% | 8.07% |
| Median Age | 32 | 33.4 | 37.3 |
| Households | 18,050 | 33,936 | 116,716,292 |
| Household Size | 3.01 | 3.27 | 2.58 |
| Male Population | 48.61% | 48.47% | 49.27% |
| Female Population | 51.39% | 51.53% | 50.96% |
| Married Population | 55.58% | 41.71% | 47.02% |
| Single Population | 44.42% | 58.29% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 8.18% | 6.99% | 6.56% |
| Age 5 to 9 | 8.69% | 6.90% | 6.61% |
| Age 10 to 14 | 8.51% | 7.89% | 6.71% |
| Age 15 to 17 | 5.07% | 5.04% | 4.21% |
| Age 18 to 20 | 2.91% | 3.24% | 2.95% |
| Age 21 to 24 | 5.81% | 7.59% | 7.01% |
| Age 25 to 34 | 15.86% | 14.74% | 13.33% |
| Age 35 to 44 | 15.59% | 14.83% | 13.33% |
| Age 45 to 49 | 13.54% | 12.95% | 14.61% |
| Age 50 to 54 | 13.54% | 12.95% | 14.61% |
| Age 55 to 59 | 9.69% | 9.47% | 11.84% |
| Age 60 to 64 | 9.69% | 9.47% | 11.84% |
| Age 65 to 74 | 4.07% | 5.20% | 7.05% |
| Age 75 to 84 | 1.55% | 3.44% | 4.24% |
| Age 85 and over | 0.53% | 1.71% | 1.78% |
| RACE | | | |
| White | 63.85% | 56.59% | 72.41% |
| Black | 19.49% | 3.87% | 12.61% |
| Asian | 3.14% | 6.98% | 4.75% |
| American Indian | 0.59% | 0.73% | 0.95% |
| Other | 12.94% | 31.82% | 9.28% |
| Hispanic | 0.74% | 5.26% | 16.35% |
| Non-Hispanic | 99.26% | 94.74% | 83.65% |
| FAMILY | | | |
| Married, w/children | 36.89% | 34.06% | 30.42% |
| Married, no children | 34.89% | 31.65% | 42.46% |
| Single, w/children | 16.76% | 17.22% | 14.39% |
| Single, no children | 11.47% | 17.08% | 12.73% |
| Divorced | 11.83% | 9.12% | 10.62% |
| Separated | 2.89% | 6.80% | 4.97% |
| Widowed | 3.93% | 6.44% | 6.14% |
| Now Married | 55.41% | 42.22% | 46.32% |
| Never Married | 25.94% | 35.43% | 31.95% |
