| PEOPLE | Rockville | Berkeley | United States |
| Population | 61,209 | 112,580 | 308,035,306 |
| Pop. Density | 4,532 | 10,752 | 87 |
| Pop. Change | 32.00% | 10.42% | 8.07% |
| Median Age | 38.7 | 31.2 | 37.3 |
| Households | 23,686 | 46,029 | 116,716,292 |
| Household Size | 2.55 | 2.17 | 2.58 |
| Male Population | 47.93% | 48.88% | 49.27% |
| Female Population | 52.07% | 51.12% | 50.96% |
| Married Population | 48.58% | 26.81% | 47.02% |
| Single Population | 51.42% | 73.19% | 52.98% |
| ESTIMATED TOTAL POPULATION BY AGE | | | |
| Age 0 to 4 | 6.54% | 3.67% | 6.56% |
| Age 5 to 9 | 6.19% | 3.37% | 6.61% |
| Age 10 to 14 | 5.36% | 3.21% | 6.71% |
| Age 15 to 17 | 3.39% | 2.07% | 4.21% |
| Age 18 to 20 | 1.72% | 8.41% | 2.95% |
| Age 21 to 24 | 5.51% | 18.50% | 7.01% |
| Age 25 to 34 | 15.38% | 15.72% | 13.33% |
| Age 35 to 44 | 15.64% | 11.13% | 13.33% |
| Age 45 to 49 | 14.70% | 10.88% | 14.61% |
| Age 50 to 54 | 14.70% | 10.88% | 14.61% |
| Age 55 to 59 | 11.61% | 11.33% | 11.84% |
| Age 60 to 64 | 11.61% | 11.33% | 11.84% |
| Age 65 to 74 | 6.81% | 6.64% | 7.05% |
| Age 75 to 84 | 4.50% | 3.31% | 4.24% |
| Age 85 and over | 2.64% | 1.75% | 1.78% |
| RACE | | | |
| White | 60.40% | 59.51% | 72.41% |
| Black | 9.57% | 9.98% | 12.61% |
| Asian | 20.56% | 19.27% | 4.75% |
| American Indian | 0.33% | 0.43% | 0.95% |
| Other | 9.13% | 10.81% | 9.28% |
| Hispanic | 0.96% | 28.95% | 16.35% |
| Non-Hispanic | 99.04% | 71.05% | 83.65% |
| FAMILY | | | |
| Married, w/children | 36.39% | 28.91% | 30.42% |
| Married, no children | 43.38% | 43.30% | 42.46% |
| Single, w/children | 9.29% | 12.52% | 14.39% |
| Single, no children | 10.94% | 15.28% | 12.73% |
| Divorced | 9.04% | 9.18% | 10.62% |
| Separated | 6.82% | 4.33% | 4.97% |
| Widowed | 5.92% | 4.44% | 6.14% |
| Now Married | 47.85% | 26.86% | 46.32% |
| Never Married | 30.38% | 55.20% | 31.95% |
