| PEOPLE | Pasadena | Altadena | United States |
| Population | 137,122 | 42,777 | 308,035,306 |
| Pop. Density | 5,970 | 4,910 | 87 |
| Pop. Change | 3.90% | 0.28% | 8.07% |
| Median Age | 37.2 | 41.9 | 37.3 |
| Households | 55,270 | 15,212 | 116,716,292 |
| Household Size | 2.41 | 2.78 | 2.58 |
| Male Population | 48.76% | 48.21% | 49.27% |
| Female Population | 51.24% | 51.79% | 50.96% |
| Married Population | 37.21% | 45.99% | 47.02% |
| Single Population | 62.79% | 54.01% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.03% | 5.72% | 6.56% |
| Age 5 to 9 | 5.15% | 5.83% | 6.61% |
| Age 10 to 14 | 4.98% | 6.48% | 6.71% |
| Age 15 to 17 | 3.16% | 4.19% | 4.21% |
| Age 18 to 20 | 2.44% | 2.39% | 2.95% |
| Age 21 to 24 | 6.76% | 5.29% | 7.01% |
| Age 25 to 34 | 18.08% | 10.70% | 13.33% |
| Age 35 to 44 | 15.00% | 14.13% | 13.33% |
| Age 45 to 49 | 13.72% | 16.96% | 14.61% |
| Age 50 to 54 | 13.72% | 16.96% | 14.61% |
| Age 55 to 59 | 11.13% | 14.13% | 11.84% |
| Age 60 to 64 | 11.13% | 14.13% | 11.84% |
| Age 65 to 74 | 6.85% | 7.89% | 7.05% |
| Age 75 to 84 | 4.35% | 4.21% | 4.24% |
| Age 85 and over | 2.34% | 2.08% | 1.78% |
| RACE | | | |
| White | 55.83% | 52.76% | 72.41% |
| Black | 10.68% | 23.69% | 12.61% |
| Asian | 14.29% | 5.39% | 4.75% |
| American Indian | 0.60% | 0.70% | 0.95% |
| Other | 18.60% | 17.45% | 9.28% |
| Hispanic | 20.74% | 3.72% | 16.35% |
| Non-Hispanic | 79.26% | 96.28% | 83.65% |
| FAMILY | | | |
| Married, w/children | 29.91% | 30.40% | 30.42% |
| Married, no children | 42.26% | 41.36% | 42.46% |
| Single, w/children | 11.30% | 10.53% | 14.39% |
| Single, no children | 16.52% | 17.71% | 12.73% |
| Divorced | 9.31% | 10.44% | 10.62% |
| Separated | 7.51% | 5.14% | 4.97% |
| Widowed | 5.86% | 6.04% | 6.14% |
| Now Married | 36.91% | 45.09% | 46.32% |
| Never Married | 40.42% | 33.29% | 31.95% |
