| PEOPLE | Somerville | Broomfield | United States |
| Population | 75,754 | 55,889 | 308,035,306 |
| Pop. Density | 18,404 | 1,692 | 87 |
| Pop. Change | -1.38% | 46.02% | 8.07% |
| Median Age | 31.7 | 36.3 | 37.3 |
| Households | 32,105 | 21,414 | 116,716,292 |
| Household Size | 2.29 | 2.59 | 2.58 |
| Male Population | 49.05% | 49.61% | 49.27% |
| Female Population | 50.95% | 50.39% | 50.96% |
| Married Population | 30.47% | 49.87% | 47.02% |
| Single Population | 69.53% | 50.13% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 4.62% | 7.06% | 6.56% |
| Age 5 to 9 | 3.09% | 7.84% | 6.61% |
| Age 10 to 14 | 2.58% | 7.19% | 6.71% |
| Age 15 to 17 | 1.76% | 4.13% | 4.21% |
| Age 18 to 20 | 2.80% | 2.12% | 2.95% |
| Age 21 to 24 | 12.17% | 5.60% | 7.01% |
| Age 25 to 34 | 31.42% | 13.95% | 13.33% |
| Age 35 to 44 | 14.21% | 16.04% | 13.33% |
| Age 45 to 49 | 10.26% | 15.46% | 14.61% |
| Age 50 to 54 | 10.26% | 15.46% | 14.61% |
| Age 55 to 59 | 7.96% | 10.76% | 11.84% |
| Age 60 to 64 | 7.96% | 10.76% | 11.84% |
| Age 65 to 74 | 4.65% | 5.56% | 7.05% |
| Age 75 to 84 | 3.05% | 3.16% | 4.24% |
| Age 85 and over | 1.42% | 1.13% | 1.78% |
| RACE | | | |
| White | 73.92% | 86.06% | 72.41% |
| Black | 6.81% | 1.05% | 12.61% |
| Asian | 8.72% | 6.10% | 4.75% |
| American Indian | 0.26% | 0.60% | 0.95% |
| Other | 10.29% | 6.19% | 9.28% |
| Hispanic | 1.15% | 58.93% | 16.35% |
| Non-Hispanic | 98.85% | 41.07% | 83.65% |
| FAMILY | | | |
| Married, w/children | 25.87% | 39.48% | 30.42% |
| Married, no children | 43.81% | 42.73% | 42.46% |
| Single, w/children | 11.95% | 10.21% | 14.39% |
| Single, no children | 18.38% | 7.58% | 12.73% |
| Divorced | 6.71% | 12.70% | 10.62% |
| Separated | 4.38% | 2.68% | 4.97% |
| Widowed | 4.85% | 3.99% | 6.14% |
| Now Married | 30.14% | 48.96% | 46.32% |
| Never Married | 53.92% | 31.67% | 31.95% |
