| PEOPLE | Ventura | Mason City | United States |
| Population | 717 | 28,079 | 308,035,306 |
| Pop. Density | 404 | 1,010 | 87 |
| Pop. Change | 9.03% | -5.04% | 8.07% |
| Median Age | 48 | 40.9 | 37.3 |
| Households | 315 | 12,366 | 116,716,292 |
| Household Size | 2.2 | 2.2 | 2.58 |
| Male Population | 51.46% | 48.21% | 49.27% |
| Female Population | 48.54% | 51.79% | 50.96% |
| Married Population | 65.72% | 49.68% | 47.02% |
| Single Population | 34.28% | 50.32% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.02% | 6.21% | 6.56% |
| Age 5 to 9 | 5.02% | 5.93% | 6.61% |
| Age 10 to 14 | 6.14% | 6.09% | 6.71% |
| Age 15 to 17 | 2.37% | 3.71% | 4.21% |
| Age 18 to 20 | 2.23% | 3.43% | 2.95% |
| Age 21 to 24 | 3.21% | 6.25% | 7.01% |
| Age 25 to 34 | 11.72% | 11.91% | 13.33% |
| Age 35 to 44 | 8.79% | 11.24% | 13.33% |
| Age 45 to 49 | 16.60% | 14.93% | 14.61% |
| Age 50 to 54 | 16.60% | 14.93% | 14.61% |
| Age 55 to 59 | 17.43% | 13.24% | 11.84% |
| Age 60 to 64 | 17.43% | 13.24% | 11.84% |
| Age 65 to 74 | 11.99% | 7.69% | 7.05% |
| Age 75 to 84 | 6.97% | 6.35% | 4.24% |
| Age 85 and over | 2.51% | 3.03% | 1.78% |
| RACE | | | |
| White | 98.33% | 93.82% | 72.41% |
| Black | 0.00% | 1.81% | 12.61% |
| Asian | 0.56% | 0.88% | 4.75% |
| American Indian | 0.00% | 0.27% | 0.95% |
| Other | 1.12% | 3.22% | 9.28% |
| Hispanic | 12.60% | 0.04% | 16.35% |
| Non-Hispanic | 87.40% | 99.96% | 83.65% |
| FAMILY | | | |
| Married, w/children | 23.72% | 26.55% | 30.42% |
| Married, no children | 61.86% | 47.53% | 42.46% |
| Single, w/children | 7.44% | 15.94% | 14.39% |
| Single, no children | 6.98% | 9.99% | 12.73% |
| Divorced | 8.93% | 11.82% | 10.62% |
| Separated | 1.07% | 3.15% | 4.97% |
| Widowed | 8.39% | 8.52% | 6.14% |
| Now Married | 64.46% | 49.42% | 46.32% |
| Never Married | 17.14% | 27.10% | 31.95% |
