| PEOPLE | Ridgewood | El Cerrito (Contra Costa county) | United States |
| Population | 24,958 | 23,549 | 308,035,306 |
| Pop. Density | 4,339 | 6,386 | 87 |
| Pop. Change | 0.24% | 1.07% | 8.07% |
| Median Age | 40.9 | 43.6 | 37.3 |
| Households | 8,456 | 10,142 | 116,716,292 |
| Household Size | 2.93 | 2.31 | 2.58 |
| Male Population | 48.27% | 47.99% | 49.27% |
| Female Population | 51.73% | 52.01% | 50.96% |
| Married Population | 63.52% | 43.17% | 47.02% |
| Single Population | 36.48% | 56.83% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.21% | 5.65% | 6.56% |
| Age 5 to 9 | 9.05% | 5.22% | 6.61% |
| Age 10 to 14 | 9.65% | 4.01% | 6.71% |
| Age 15 to 17 | 5.74% | 2.48% | 4.21% |
| Age 18 to 20 | 1.92% | 1.18% | 2.95% |
| Age 21 to 24 | 3.25% | 4.25% | 7.01% |
| Age 25 to 34 | 6.37% | 13.68% | 13.33% |
| Age 35 to 44 | 14.78% | 15.70% | 13.33% |
| Age 45 to 49 | 18.13% | 14.90% | 14.61% |
| Age 50 to 54 | 18.13% | 14.90% | 14.61% |
| Age 55 to 59 | 12.42% | 14.98% | 11.84% |
| Age 60 to 64 | 12.42% | 14.98% | 11.84% |
| Age 65 to 74 | 6.39% | 8.38% | 7.05% |
| Age 75 to 84 | 4.03% | 5.93% | 4.24% |
| Age 85 and over | 2.06% | 3.64% | 1.78% |
| RACE | | | |
| White | 82.21% | 53.26% | 72.41% |
| Black | 1.59% | 7.72% | 12.61% |
| Asian | 12.99% | 27.34% | 4.75% |
| American Indian | 0.06% | 0.45% | 0.95% |
| Other | 3.14% | 11.21% | 9.28% |
| Hispanic | 0.65% | 20.08% | 16.35% |
| Non-Hispanic | 99.35% | 79.92% | 83.65% |
| FAMILY | | | |
| Married, w/children | 50.23% | 29.35% | 30.42% |
| Married, no children | 36.19% | 46.92% | 42.46% |
| Single, w/children | 6.54% | 9.47% | 14.39% |
| Single, no children | 7.04% | 14.26% | 12.73% |
| Divorced | 4.62% | 10.57% | 10.62% |
| Separated | 3.28% | 4.59% | 4.97% |
| Widowed | 5.01% | 7.64% | 6.14% |
| Now Married | 63.20% | 43.20% | 46.32% |
| Never Married | 23.88% | 34.00% | 31.95% |
