| PEOPLE | Buffalo Grove | Los Gatos | United States |
| Population | 41,496 | 29,413 | 308,035,306 |
| Pop. Density | 4,368 | 2,655 | 87 |
| Pop. Change | -5.31% | 3.16% | 8.07% |
| Median Age | 41.9 | 45 | 37.3 |
| Households | 16,206 | 12,355 | 116,716,292 |
| Household Size | 2.56 | 2.4 | 2.58 |
| Male Population | 48.37% | 47.91% | 49.27% |
| Female Population | 51.63% | 52.09% | 50.96% |
| Married Population | 60.87% | 51.35% | 47.02% |
| Single Population | 39.13% | 48.65% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 4.83% | 4.69% | 6.56% |
| Age 5 to 9 | 6.31% | 6.61% | 6.61% |
| Age 10 to 14 | 7.35% | 6.67% | 6.71% |
| Age 15 to 17 | 5.14% | 4.36% | 4.21% |
| Age 18 to 20 | 1.99% | 1.66% | 2.95% |
| Age 21 to 24 | 4.43% | 3.25% | 7.01% |
| Age 25 to 34 | 10.09% | 8.49% | 13.33% |
| Age 35 to 44 | 14.56% | 14.36% | 13.33% |
| Age 45 to 49 | 19.29% | 18.69% | 14.61% |
| Age 50 to 54 | 19.29% | 18.69% | 14.61% |
| Age 55 to 59 | 14.11% | 13.33% | 11.84% |
| Age 60 to 64 | 14.11% | 13.33% | 11.84% |
| Age 65 to 74 | 6.17% | 9.09% | 7.05% |
| Age 75 to 84 | 4.01% | 5.74% | 4.24% |
| Age 85 and over | 1.72% | 3.08% | 1.78% |
| RACE | | | |
| White | 79.82% | 81.80% | 72.41% |
| Black | 1.00% | 0.91% | 12.61% |
| Asian | 16.00% | 10.89% | 4.75% |
| American Indian | 0.16% | 0.29% | 0.95% |
| Other | 3.02% | 6.10% | 9.28% |
| Hispanic | 4.00% | 39.73% | 16.35% |
| Non-Hispanic | 96.00% | 60.27% | 83.65% |
| FAMILY | | | |
| Married, w/children | 41.33% | 36.64% | 30.42% |
| Married, no children | 44.61% | 45.62% | 42.46% |
| Single, w/children | 6.65% | 9.82% | 14.39% |
| Single, no children | 7.41% | 7.92% | 12.73% |
| Divorced | 7.79% | 11.41% | 10.62% |
| Separated | 2.94% | 4.23% | 4.97% |
| Widowed | 4.39% | 6.94% | 6.14% |
| Now Married | 59.92% | 51.47% | 46.32% |
| Never Married | 24.96% | 25.96% | 31.95% |
