| | Ada, MI | Northampton, MA | United States |
| Population | 14,343 | 29,379 | 329,725,481 |
| Female Population | 49.7% | 58.4% | 50.5% |
| Male Population | 50.3% | 41.6% | 49.5% |
| Median Age | 41 | 41 | 38.4 |
| space3 | | | |
| Population - 2010 | 13,145 | 28,663 | 309,327,143 |
| Population - 2000 | 9,882 | 28,978 | 285,036,114 |
| Population - 1990 | 7,578 | 29,289 | 251,960,433 |
| Pop. 2000 to Now | 50.7% | -2.1% | 15.6% |
| Pop. 1990 to Now | 96.5% | -3.2% | 30.8% |
| space4 | | | |
| Population Density | 398.1 | 857.9 | 93.4 |
| Land Area | 36.0 | 34.2 | 3,531,905.4 |
| Water Area | 1.1 | 1.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Ada, MI | Northampton, MA | United States |
| Age 0 to 4 | 7.6% | 2.5% | 5.9% |
| Age 5 to 9 | 6.0% | 4.4% | 6.1% |
| Age 10 to 14 | 8.4% | 5.2% | 6.6% |
| Age 15 to 17 | 6.1% | 3.2% | 3.9% |
| Age 18 to 20 | 2.0% | 7.7% | 4.0% |
| Age 21 to 24 | 2.5% | 8.1% | 5.2% |
| Age 25 to 34 | 10.1% | 12.2% | 13.8% |
| Age 35 to 44 | 13.9% | 11.9% | 12.9% |
| Age 45 to 54 | 16.7% | 12.3% | 12.6% |
| Age 55 to 59 | 5.2% | 6.3% | 6.7% |
| Age 60 to 64 | 6.9% | 6.8% | 6.3% |
| Age 65 to 74 | 9.9% | 12.7% | 9.6% |
| Age 75 to 84 | 3.7% | 4.5% | 4.5% |
| Age 85 and over | 0.9% | 2.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Ada, MI | Northampton, MA | United States |
| White | 88.3% | 82.4% | 59.4% |
| Black | 0.6% | 2.6% | 12.2% |
| Asian | 4.0% | 3.5% | 5.6% |
| Native American | 0.5% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 3.2% | 3.7% | 3.2% |
| Hispanic | 3.5% | 7.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Ada, MI | Northampton, MA | United States |
| Married Population | 71.9% | 41.1% | 49.8% |
| Currently Married | 71.4% | 40.1% | 48.0% |
| Married but Separated | 0.6% | 1.0% | 1.8% |
| Single Population | 28.1% | 58.9% | 50.2% |
| Never Married | 20.6% | 42.2% | 33.8% |
| Divorced | 5.3% | 11.5% | 10.8% |
| Widowed | 2.1% | 5.2% | 5.6% |
| space5 | | | |
| Household Size | 2.90 | 2.13 | 2.60 |
| Households | 4,939 | 11,949 | 124,010,992 |
| Family Households | 4,364 | 6,478 | 80,755,759 |
| Married couple, w/children | 44.2% | 30.2% | 30.5% |
| Married couple, no children | 48.1% | 45.8% | 42.9% |
| Non Family Households | 575 | 5,471 | 43,255,233 |
| Single householder, w/children | 5.6% | 13.1% | 15.8% |
| Single householder, no children | 2.1% | 10.9% | 10.8% |