| Statistic | Westminster | Colorado | National |
| Population | 111,770 | 5,758,736 | 328,239,523 |
| Population density (sq mi) | 3,522 | 56 | 91 |
| Median age | 36.3 | 36.4 | 37.7 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married (15yrs & older) | 57% | 56% | 55% |
| Families w/ Kids under 18 | 46% | 45% | 43% |
| Speak English | 83% | 83% | 79% |
| Speak Spanish | 10% | 12% | 13% |
| Race | Westminster | Colorado | National |
| White | 85.43% | 84.28% | 73.35% |
| Black | 1.96% | 4.09% | 12.63% |
| Asian | 5.46% | 2.94% | 5.22% |
| American Indian | 1.05% | 0.94% | 0.82% |
| Native Hawaiian | 0.09% | 0.14% | 0.18% |
| Mixed race | 3.52% | 3.43% | 3.06% |
| Other race | 2.50% | 4.18% | 4.75% |
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