| PEOPLE | San Buenaventura (Ventura) | Napa | United States |
| Population | 106,433 | 76,915 | 308,035,306 |
| Pop. Density | 4,915 | 4,312 | 87 |
| Pop. Change | 4.85% | 6.44% | 8.07% |
| Median Age | 38.9 | 37.4 | 37.3 |
| Households | 40,438 | 28,166 | 116,716,292 |
| Household Size | 2.58 | 2.7 | 2.58 |
| Male Population | 49.41% | 49.34% | 49.27% |
| Female Population | 50.59% | 50.66% | 50.96% |
| Married Population | 44.23% | 47.18% | 47.02% |
| Single Population | 55.77% | 52.82% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.79% | 6.58% | 6.56% |
| Age 5 to 9 | 5.97% | 6.66% | 6.61% |
| Age 10 to 14 | 6.51% | 6.90% | 6.71% |
| Age 15 to 17 | 4.20% | 4.37% | 4.21% |
| Age 18 to 20 | 2.73% | 2.62% | 2.95% |
| Age 21 to 24 | 6.27% | 6.12% | 7.01% |
| Age 25 to 34 | 13.39% | 13.65% | 13.33% |
| Age 35 to 44 | 13.69% | 13.57% | 13.33% |
| Age 45 to 49 | 15.76% | 14.09% | 14.61% |
| Age 50 to 54 | 15.76% | 14.09% | 14.61% |
| Age 55 to 59 | 12.39% | 11.81% | 11.84% |
| Age 60 to 64 | 12.39% | 11.81% | 11.84% |
| Age 65 to 74 | 6.48% | 6.77% | 7.05% |
| Age 75 to 84 | 4.51% | 4.39% | 4.24% |
| Age 85 and over | 2.31% | 2.48% | 1.78% |
| RACE | | | |
| White | 76.62% | 75.09% | 72.41% |
| Black | 1.62% | 0.63% | 12.61% |
| Asian | 3.44% | 2.28% | 4.75% |
| American Indian | 1.21% | 0.83% | 0.95% |
| Other | 17.11% | 21.17% | 9.28% |
| Hispanic | 5.01% | 32.59% | 16.35% |
| Non-Hispanic | 94.99% | 67.41% | 83.65% |
| FAMILY | | | |
| Married, w/children | 30.98% | 34.23% | 30.42% |
| Married, no children | 41.75% | 40.16% | 42.46% |
| Single, w/children | 13.75% | 13.60% | 14.39% |
| Single, no children | 13.52% | 12.01% | 12.73% |
| Divorced | 13.94% | 11.53% | 10.62% |
| Separated | 4.91% | 6.25% | 4.97% |
| Widowed | 6.26% | 6.68% | 6.14% |
| Now Married | 44.04% | 46.89% | 46.32% |
| Never Married | 30.85% | 28.65% | 31.95% |
