| | Gill, MA | Warwick, NY | United States |
| Population | 1,708 | 31,965 | 329,725,481 |
| Female Population | 45.1% | 50.9% | 50.5% |
| Male Population | 54.9% | 49.1% | 49.5% |
| Median Age | 47.7 | 45 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,474 | 32,128 | 309,327,143 |
| Population - 2000 | 1,363 | 30,764 | 285,036,114 |
| Population - 1990 | 1,583 | 27,193 | 251,960,433 |
| Pop. 2000 to Now | 8.1% | 1.1% | 15.6% |
| Pop. 1990 to Now | -7.0% | 14.4% | 30.8% |
| space4 | | | |
| Population Density | 124.1 | 315.4 | 93.4 |
| Land Area | 13.8 | 101.3 | 3,531,905.4 |
| Water Area | 1.0 | 3.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Gill, MA | Warwick, NY | United States |
| Age 0 to 4 | 2.5% | 4.6% | 5.9% |
| Age 5 to 9 | 2.2% | 5.9% | 6.1% |
| Age 10 to 14 | 6.3% | 5.8% | 6.6% |
| Age 15 to 17 | 3.6% | 4.0% | 3.9% |
| Age 18 to 20 | 2.3% | 3.0% | 4.0% |
| Age 21 to 24 | 4.3% | 4.2% | 5.2% |
| Age 25 to 34 | 12.7% | 11.5% | 13.8% |
| Age 35 to 44 | 13.9% | 11.0% | 12.9% |
| Age 45 to 54 | 16.9% | 14.7% | 12.6% |
| Age 55 to 59 | 8.4% | 8.7% | 6.7% |
| Age 60 to 64 | 7.8% | 8.4% | 6.3% |
| Age 65 to 74 | 14.4% | 10.5% | 9.6% |
| Age 75 to 84 | 4.0% | 6.0% | 4.5% |
| Age 85 and over | 0.6% | 1.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Gill, MA | Warwick, NY | United States |
| White | 92.7% | 83.5% | 59.4% |
| Black | 2.0% | 2.9% | 12.2% |
| Asian | 3.2% | 1.7% | 5.6% |
| Native American | 0.0% | 0.5% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 2.0% | 1.5% | 3.2% |
| Hispanic | 0.1% | 9.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Gill, MA | Warwick, NY | United States |
| Married Population | 55.7% | 56.3% | 49.8% |
| Currently Married | 55.3% | 55.5% | 48.0% |
| Married but Separated | 0.5% | 0.8% | 1.8% |
| Single Population | 44.3% | 43.7% | 50.2% |
| Never Married | 28.3% | 29.3% | 33.8% |
| Divorced | 13.2% | 9.1% | 10.8% |
| Widowed | 2.8% | 5.3% | 5.6% |
| space5 | | | |
| Household Size | 2.45 | 2.71 | 2.60 |
| Households | 602 | 11,739 | 124,010,992 |
| Family Households | 373 | 8,646 | 80,755,759 |
| Married couple, w/children | 26.5% | 31.1% | 30.5% |
| Married couple, no children | 55.5% | 51.3% | 42.9% |
| Non Family Households | 229 | 3,093 | 43,255,233 |
| Single householder, w/children | 9.4% | 6.3% | 15.8% |
| Single householder, no children | 8.6% | 11.3% | 10.8% |