| PEOPLE | Columbia | Oceanside | United States |
| Population | 129,272 | 167,086 | 308,035,306 |
| Pop. Density | 978 | 4,052 | 87 |
| Pop. Change | 5.17% | 3.86% | 8.07% |
| Median Age | 28.3 | 35.2 | 37.3 |
| Households | 45,666 | 59,238 | 116,716,292 |
| Household Size | 2.19 | 2.81 | 2.58 |
| Male Population | 51.47% | 49.33% | 49.27% |
| Female Population | 48.53% | 50.67% | 50.96% |
| Married Population | 25.11% | 49.14% | 47.02% |
| Single Population | 74.89% | 50.86% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.40% | 6.97% | 6.56% |
| Age 5 to 9 | 4.57% | 6.34% | 6.61% |
| Age 10 to 14 | 4.08% | 6.36% | 6.71% |
| Age 15 to 17 | 2.90% | 4.16% | 4.21% |
| Age 18 to 20 | 8.80% | 2.93% | 2.95% |
| Age 21 to 24 | 17.33% | 8.46% | 7.01% |
| Age 25 to 34 | 17.48% | 14.48% | 13.33% |
| Age 35 to 44 | 10.91% | 12.93% | 13.33% |
| Age 45 to 49 | 10.97% | 14.04% | 14.61% |
| Age 50 to 54 | 10.97% | 14.04% | 14.61% |
| Age 55 to 59 | 8.86% | 10.46% | 11.84% |
| Age 60 to 64 | 8.86% | 10.46% | 11.84% |
| Age 65 to 74 | 4.44% | 6.09% | 7.05% |
| Age 75 to 84 | 2.90% | 4.69% | 4.24% |
| Age 85 and over | 1.36% | 2.09% | 1.78% |
| RACE | | | |
| White | 51.66% | 65.25% | 72.41% |
| Black | 42.19% | 4.71% | 12.61% |
| Asian | 2.23% | 6.63% | 4.75% |
| American Indian | 0.34% | 0.83% | 0.95% |
| Other | 3.59% | 22.58% | 9.28% |
| Hispanic | 11.29% | 7.01% | 16.35% |
| Non-Hispanic | 88.71% | 92.99% | 83.65% |
| FAMILY | | | |
| Married, w/children | 22.79% | 32.31% | 30.42% |
| Married, no children | 35.05% | 42.71% | 42.46% |
| Single, w/children | 22.32% | 12.42% | 14.39% |
| Single, no children | 19.83% | 12.56% | 12.73% |
| Divorced | 8.99% | 10.94% | 10.62% |
| Separated | 9.77% | 5.21% | 4.97% |
| Widowed | 5.96% | 6.08% | 6.14% |
| Now Married | 24.91% | 48.67% | 46.32% |
| Never Married | 50.37% | 29.10% | 31.95% |
