| | Westminster, MA | Laconia, NH | United States |
| Population | 8,148 | 16,786 | 329,725,481 |
| Female Population | 50.8% | 49.7% | 50.5% |
| Male Population | 49.2% | 50.3% | 49.5% |
| Median Age | 47.4 | 43.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 7,280 | 15,975 | 309,327,143 |
| Population - 2000 | 6,907 | 16,411 | 285,036,114 |
| Population - 1990 | 6,191 | 15,743 | 251,960,433 |
| Pop. 2000 to Now | 17.1% | 1.4% | 15.6% |
| Pop. 1990 to Now | 30.7% | 5.7% | 30.8% |
| space4 | | | |
| Population Density | 230.0 | 844.8 | 93.4 |
| Land Area | 35.4 | 19.9 | 3,531,905.4 |
| Water Area | 1.8 | 6.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Westminster, MA | Laconia, NH | United States |
| Age 0 to 4 | 4.6% | 4.2% | 5.9% |
| Age 5 to 9 | 6.8% | 4.3% | 6.1% |
| Age 10 to 14 | 5.4% | 6.8% | 6.6% |
| Age 15 to 17 | 3.3% | 4.2% | 3.9% |
| Age 18 to 20 | 2.5% | 3.3% | 4.0% |
| Age 21 to 24 | 2.6% | 4.5% | 5.2% |
| Age 25 to 34 | 10.0% | 12.4% | 13.8% |
| Age 35 to 44 | 13.4% | 12.1% | 12.9% |
| Age 45 to 54 | 11.2% | 10.7% | 12.6% |
| Age 55 to 59 | 8.0% | 7.5% | 6.7% |
| Age 60 to 64 | 10.4% | 8.8% | 6.3% |
| Age 65 to 74 | 17.0% | 13.5% | 9.6% |
| Age 75 to 84 | 4.2% | 4.6% | 4.5% |
| Age 85 and over | 0.6% | 3.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Westminster, MA | Laconia, NH | United States |
| White | 97.5% | 92.4% | 59.4% |
| Black | 0.0% | 0.9% | 12.2% |
| Asian | 0.0% | 0.7% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.7% | 0.4% |
| Two or More Races | 0.6% | 1.5% | 3.2% |
| Hispanic | 1.9% | 3.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Westminster, MA | Laconia, NH | United States |
| Married Population | 60.3% | 46.0% | 49.8% |
| Currently Married | 59.9% | 42.7% | 48.0% |
| Married but Separated | 0.5% | 3.3% | 1.8% |
| Single Population | 39.7% | 54.0% | 50.2% |
| Never Married | 27.2% | 29.0% | 33.8% |
| Divorced | 7.2% | 16.5% | 10.8% |
| Widowed | 5.3% | 8.5% | 5.6% |
| space5 | | | |
| Household Size | 2.61 | 2.40 | 2.60 |
| Households | 3,122 | 6,795 | 124,010,992 |
| Family Households | 2,310 | 3,949 | 80,755,759 |
| Married couple, w/children | 30.2% | 21.7% | 30.5% |
| Married couple, no children | 58.1% | 47.6% | 42.9% |
| Non Family Households | 812 | 2,846 | 43,255,233 |
| Single householder, w/children | 7.9% | 18.4% | 15.8% |
| Single householder, no children | 3.9% | 12.4% | 10.8% |