| PEOPLE | Southlake | Colleyville | United States |
| Population | 26,575 | 22,807 | 308,035,306 |
| Pop. Density | 1,215 | 1,741 | 87 |
| Pop. Change | 28.73% | 21.81% | 8.07% |
| Median Age | 40.8 | 45.4 | 37.3 |
| Households | 8,193 | 7,913 | 116,716,292 |
| Household Size | 3.23 | 2.85 | 2.58 |
| Male Population | 50.10% | 49.53% | 49.27% |
| Female Population | 49.90% | 50.47% | 50.96% |
| Married Population | 72.53% | 70.98% | 47.02% |
| Single Population | 27.47% | 29.02% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 5.20% | 4.20% | 6.56% |
| Age 5 to 9 | 9.45% | 7.02% | 6.61% |
| Age 10 to 14 | 11.99% | 9.02% | 6.71% |
| Age 15 to 17 | 7.60% | 6.27% | 4.21% |
| Age 18 to 20 | 2.45% | 2.34% | 2.95% |
| Age 21 to 24 | 2.35% | 3.26% | 7.01% |
| Age 25 to 34 | 3.62% | 4.24% | 13.33% |
| Age 35 to 44 | 15.16% | 12.72% | 13.33% |
| Age 45 to 49 | 23.90% | 23.71% | 14.61% |
| Age 50 to 54 | 23.90% | 23.71% | 14.61% |
| Age 55 to 59 | 12.40% | 16.85% | 11.84% |
| Age 60 to 64 | 12.40% | 16.85% | 11.84% |
| Age 65 to 74 | 3.85% | 7.15% | 7.05% |
| Age 75 to 84 | 1.41% | 2.55% | 4.24% |
| Age 85 and over | 0.61% | 0.67% | 1.78% |
| RACE | | | |
| White | 88.26% | 88.86% | 72.41% |
| Black | 2.06% | 1.97% | 12.61% |
| Asian | 6.23% | 5.92% | 4.75% |
| American Indian | 0.35% | 0.46% | 0.95% |
| Other | 3.11% | 2.78% | 9.28% |
| Hispanic | 8.22% | 0.65% | 16.35% |
| Non-Hispanic | 91.78% | 99.35% | 83.65% |
| FAMILY | | | |
| Married, w/children | 55.40% | 41.01% | 30.42% |
| Married, no children | 37.83% | 51.26% | 42.46% |
| Single, w/children | 4.57% | 4.37% | 14.39% |
| Single, no children | 2.20% | 3.36% | 12.73% |
| Divorced | 4.23% | 4.45% | 10.62% |
| Separated | 1.06% | 1.44% | 4.97% |
| Widowed | 1.57% | 1.99% | 6.14% |
| Now Married | 71.22% | 71.02% | 46.32% |
| Never Married | 21.93% | 21.10% | 31.95% |
