| | Britton, MI | Mamaroneck, NY | United States |
| Population | 621 | 31,381 | 329,725,481 |
| Female Population | 48.3% | 47.9% | 50.5% |
| Male Population | 51.7% | 52.1% | 49.5% |
| Median Age | 39.5 | 38.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 585 | 29,228 | 309,327,143 |
| Population - 2000 | 699 | 28,967 | 285,036,114 |
| Population - 1990 | 694 | 27,706 | 251,960,433 |
| Pop. 2000 to Now | -20.2% | 1.3% | 15.6% |
| Pop. 1990 to Now | -19.6% | 5.9% | 30.8% |
| space4 | | | |
| Population Density | 785.1 | 4,716.1 | 93.4 |
| Land Area | 0.8 | 6.7 | 3,531,905.4 |
| Water Area | 0.0 | 7.4 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Britton, MI | Mamaroneck, NY | United States |
| Age 0 to 4 | 7.4% | 6.4% | 5.9% |
| Age 5 to 9 | 5.0% | 9.1% | 6.1% |
| Age 10 to 14 | 3.7% | 8.6% | 6.6% |
| Age 15 to 17 | 5.3% | 3.9% | 3.9% |
| Age 18 to 20 | 0.3% | 2.9% | 4.0% |
| Age 21 to 24 | 5.5% | 2.5% | 5.2% |
| Age 25 to 34 | 19.5% | 10.4% | 13.8% |
| Age 35 to 44 | 8.7% | 16.4% | 12.9% |
| Age 45 to 54 | 15.0% | 14.4% | 12.6% |
| Age 55 to 59 | 9.5% | 5.7% | 6.7% |
| Age 60 to 64 | 5.8% | 6.4% | 6.3% |
| Age 65 to 74 | 9.2% | 7.5% | 9.6% |
| Age 75 to 84 | 2.6% | 3.7% | 4.5% |
| Age 85 and over | 2.6% | 2.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Britton, MI | Mamaroneck, NY | United States |
| White | 93.7% | 72.2% | 59.4% |
| Black | 0.0% | 2.6% | 12.2% |
| Asian | 0.0% | 4.7% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.3% | 1.0% | 0.4% |
| Two or More Races | 1.0% | 2.2% | 3.2% |
| Hispanic | 4.0% | 17.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Britton, MI | Mamaroneck, NY | United States |
| Married Population | 55.1% | 60.5% | 49.8% |
| Currently Married | 54.3% | 57.3% | 48.0% |
| Married but Separated | 0.8% | 3.2% | 1.8% |
| Single Population | 44.9% | 39.5% | 50.2% |
| Never Married | 23.4% | 28.7% | 33.8% |
| Divorced | 14.0% | 6.1% | 10.8% |
| Widowed | 7.5% | 4.7% | 5.6% |
| space5 | | | |
| Household Size | 2.45 | 2.95 | 2.60 |
| Households | 253 | 10,519 | 124,010,992 |
| Family Households | 206 | 7,944 | 80,755,759 |
| Married couple, w/children | 30.6% | 46.4% | 30.5% |
| Married couple, no children | 36.9% | 37.2% | 42.9% |
| Non Family Households | 47 | 2,575 | 43,255,233 |
| Single householder, w/children | 14.6% | 9.4% | 15.8% |
| Single householder, no children | 18.0% | 7.0% | 10.8% |