| | Canterbury, CT | Clinton, MT | United States |
| Population | 5,053 | 811 | 329,725,481 |
| Female Population | 48.3% | 39.6% | 50.5% |
| Male Population | 51.7% | 60.4% | 49.5% |
| Median Age | 46 | 40.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,124 | 807 | 309,327,143 |
| Population - 2000 | 4,692 | 549 | 285,036,114 |
| Population - 1990 | 4,467 | 538 | 251,960,433 |
| Pop. 2000 to Now | 8.4% | 93.6% | 15.6% |
| Pop. 1990 to Now | 13.9% | 97.6% | 30.8% |
| space4 | | | |
| Population Density | 126.5 | 247.9 | 93.4 |
| Land Area | 39.9 | 3.3 | 3,531,905.4 |
| Water Area | 0.3 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Canterbury, CT | Clinton, MT | United States |
| Age 0 to 4 | 3.6% | 7.5% | 5.9% |
| Age 5 to 9 | 6.2% | 1.7% | 6.1% |
| Age 10 to 14 | 4.7% | 6.3% | 6.6% |
| Age 15 to 17 | 3.6% | 10.6% | 3.9% |
| Age 18 to 20 | 3.1% | 6.4% | 4.0% |
| Age 21 to 24 | 2.9% | 1.9% | 5.2% |
| Age 25 to 34 | 5.8% | 8.6% | 13.8% |
| Age 35 to 44 | 16.0% | 25.3% | 12.9% |
| Age 45 to 54 | 19.5% | 14.2% | 12.6% |
| Age 55 to 59 | 3.8% | 3.2% | 6.7% |
| Age 60 to 64 | 11.3% | 5.2% | 6.3% |
| Age 65 to 74 | 12.2% | 7.8% | 9.6% |
| Age 75 to 84 | 5.4% | 1.0% | 4.5% |
| Age 85 and over | 2.0% | 0.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Canterbury, CT | Clinton, MT | United States |
| White | 91.1% | 82.7% | 59.4% |
| Black | 0.9% | 0.0% | 12.2% |
| Asian | 1.2% | 3.5% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.7% | 13.1% | 3.2% |
| Hispanic | 4.1% | 0.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Canterbury, CT | Clinton, MT | United States |
| Married Population | 59.7% | 43.8% | 49.8% |
| Currently Married | 59.3% | 43.8% | 48.0% |
| Married but Separated | 0.4% | 0.0% | 1.8% |
| Single Population | 40.3% | 56.2% | 50.2% |
| Never Married | 23.2% | 36.8% | 33.8% |
| Divorced | 9.9% | 14.9% | 10.8% |
| Widowed | 7.2% | 4.5% | 5.6% |
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| Household Size | 2.36 | 2.90 | 2.60 |
| Households | 2,138 | 280 | 124,010,992 |
| Family Households | 1,490 | 221 | 80,755,759 |
| Married couple, w/children | 32.0% | 25.8% | 30.5% |
| Married couple, no children | 50.5% | 38.5% | 42.9% |
| Non Family Households | 648 | 59 | 43,255,233 |
| Single householder, w/children | 7.8% | 24.0% | 15.8% |
| Single householder, no children | 9.7% | 11.8% | 10.8% |