| PEOPLE | Lexington Park | Round Lake Beach | United States |
| Population | 11,626 | 28,175 | 308,035,306 |
| Pop. Density | 2,068 | 5,565 | 87 |
| Pop. Change | 35.37% | 9.48% | 8.07% |
| Median Age | 29 | 30.2 | 37.3 |
| Households | 4,636 | 8,055 | 116,716,292 |
| Household Size | 2.53 | 3.5 | 2.58 |
| Male Population | 49.29% | 50.45% | 49.27% |
| Female Population | 50.71% | 49.55% | 50.96% |
| Married Population | 44.73% | 51.08% | 47.02% |
| Single Population | 55.27% | 48.92% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 10.30% | 8.80% | 6.56% |
| Age 5 to 9 | 7.94% | 9.13% | 6.61% |
| Age 10 to 14 | 6.27% | 9.63% | 6.71% |
| Age 15 to 17 | 4.12% | 5.35% | 4.21% |
| Age 18 to 20 | 2.43% | 2.95% | 2.95% |
| Age 21 to 24 | 9.16% | 6.54% | 7.01% |
| Age 25 to 34 | 21.05% | 15.28% | 13.33% |
| Age 35 to 44 | 13.12% | 16.25% | 13.33% |
| Age 45 to 49 | 13.19% | 12.93% | 14.61% |
| Age 50 to 54 | 13.19% | 12.93% | 14.61% |
| Age 55 to 59 | 7.20% | 7.65% | 11.84% |
| Age 60 to 64 | 7.20% | 7.65% | 11.84% |
| Age 65 to 74 | 3.20% | 3.52% | 7.05% |
| Age 75 to 84 | 1.59% | 1.41% | 4.24% |
| Age 85 and over | 0.43% | 0.56% | 1.78% |
| RACE | | | |
| White | 55.51% | 68.71% | 72.41% |
| Black | 31.57% | 4.25% | 12.61% |
| Asian | 4.37% | 3.00% | 4.75% |
| American Indian | 0.62% | 1.33% | 0.95% |
| Other | 7.93% | 22.72% | 9.28% |
| Hispanic | 0.98% | 1.30% | 16.35% |
| Non-Hispanic | 99.02% | 98.70% | 83.65% |
| FAMILY | | | |
| Married, w/children | 30.42% | 47.84% | 30.42% |
| Married, no children | 32.69% | 29.06% | 42.46% |
| Single, w/children | 25.80% | 13.53% | 14.39% |
| Single, no children | 11.09% | 9.56% | 12.73% |
| Divorced | 8.00% | 9.16% | 10.62% |
| Separated | 6.64% | 5.90% | 4.97% |
| Widowed | 1.67% | 4.01% | 6.14% |
| Now Married | 45.31% | 51.03% | 46.32% |
| Never Married | 38.37% | 29.90% | 31.95% |
