| PEOPLE | Tomball | Katy | United States |
| Population | 10,753 | 14,102 | 308,035,306 |
| Pop. Density | 914 | 1,253 | 87 |
| Pop. Change | 16.82% | 43.26% | 8.07% |
| Median Age | 39.8 | 36.3 | 37.3 |
| Households | 4,390 | 4,752 | 116,716,292 |
| Household Size | 2.4 | 3.05 | 2.58 |
| Male Population | 46.39% | 49.16% | 49.27% |
| Female Population | 53.61% | 50.84% | 50.96% |
| Married Population | 42.45% | 55.86% | 47.02% |
| Single Population | 57.55% | 44.14% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.23% | 7.01% | 6.56% |
| Age 5 to 9 | 5.78% | 6.88% | 6.61% |
| Age 10 to 14 | 6.31% | 8.09% | 6.71% |
| Age 15 to 17 | 4.39% | 5.76% | 4.21% |
| Age 18 to 20 | 2.68% | 2.99% | 2.95% |
| Age 21 to 24 | 7.01% | 5.80% | 7.01% |
| Age 25 to 34 | 12.08% | 11.86% | 13.33% |
| Age 35 to 44 | 12.28% | 13.54% | 13.33% |
| Age 45 to 49 | 14.65% | 15.98% | 14.61% |
| Age 50 to 54 | 14.65% | 15.98% | 14.61% |
| Age 55 to 59 | 10.45% | 10.87% | 11.84% |
| Age 60 to 64 | 10.45% | 10.87% | 11.84% |
| Age 65 to 74 | 6.99% | 5.99% | 7.05% |
| Age 75 to 84 | 6.80% | 3.47% | 4.24% |
| Age 85 and over | 4.35% | 1.74% | 1.78% |
| RACE | | | |
| White | 82.67% | 80.09% | 72.41% |
| Black | 6.33% | 5.26% | 12.61% |
| Asian | 1.12% | 1.55% | 4.75% |
| American Indian | 0.78% | 0.61% | 0.95% |
| Other | 9.10% | 12.49% | 9.28% |
| Hispanic | 1.74% | 1.48% | 16.35% |
| Non-Hispanic | 98.26% | 98.52% | 83.65% |
| FAMILY | | | |
| Married, w/children | 27.54% | 36.13% | 30.42% |
| Married, no children | 39.28% | 41.05% | 42.46% |
| Single, w/children | 19.98% | 12.53% | 14.39% |
| Single, no children | 13.20% | 10.30% | 12.73% |
| Divorced | 13.12% | 9.22% | 10.62% |
| Separated | 8.03% | 5.20% | 4.97% |
| Widowed | 10.00% | 3.83% | 6.14% |
| Now Married | 42.96% | 55.90% | 46.32% |
| Never Married | 25.89% | 25.84% | 31.95% |
