| | Ashfield, MA | Spring Grove, IL | United States |
| Population | 1,710 | 5,713 | 329,725,481 |
| Female Population | 46.0% | 46.8% | 50.5% |
| Male Population | 54.0% | 53.2% | 49.5% |
| Median Age | 58.5 | 39.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,736 | 5,783 | 309,327,143 |
| Population - 2000 | 1,800 | 3,880 | 285,036,114 |
| Population - 1990 | 1,715 | 1,066 | 251,960,433 |
| Pop. 2000 to Now | -4.4% | 46.4% | 15.6% |
| Pop. 1990 to Now | 0.3% | 432.7% | 30.8% |
| space4 | | | |
| Population Density | 42.8 | 649.4 | 93.4 |
| Land Area | 40.0 | 8.8 | 3,531,905.4 |
| Water Area | 0.3 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Ashfield, MA | Spring Grove, IL | United States |
| Age 0 to 4 | 1.9% | 8.6% | 5.9% |
| Age 5 to 9 | 3.6% | 4.3% | 6.1% |
| Age 10 to 14 | 2.3% | 9.5% | 6.6% |
| Age 15 to 17 | 1.8% | 4.6% | 3.9% |
| Age 18 to 20 | 2.2% | 2.0% | 4.0% |
| Age 21 to 24 | 2.5% | 2.3% | 5.2% |
| Age 25 to 34 | 9.6% | 13.4% | 13.8% |
| Age 35 to 44 | 3.9% | 11.4% | 12.9% |
| Age 45 to 54 | 17.1% | 15.5% | 12.6% |
| Age 55 to 59 | 10.9% | 10.4% | 6.7% |
| Age 60 to 64 | 16.8% | 8.5% | 6.3% |
| Age 65 to 74 | 19.6% | 7.0% | 9.6% |
| Age 75 to 84 | 6.6% | 2.0% | 4.5% |
| Age 85 and over | 1.3% | 0.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Ashfield, MA | Spring Grove, IL | United States |
| White | 91.0% | 85.2% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.9% | 2.0% | 5.6% |
| Native American | 0.6% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.3% | 0.4% |
| Two or More Races | 4.4% | 6.8% | 3.2% |
| Hispanic | 3.0% | 5.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Ashfield, MA | Spring Grove, IL | United States |
| Married Population | 53.5% | 71.3% | 49.8% |
| Currently Married | 51.7% | 69.1% | 48.0% |
| Married but Separated | 1.8% | 2.2% | 1.8% |
| Single Population | 46.5% | 28.7% | 50.2% |
| Never Married | 26.3% | 22.6% | 33.8% |
| Divorced | 14.9% | 2.6% | 10.8% |
| Widowed | 5.3% | 3.5% | 5.6% |
| space5 | | | |
| Household Size | 2.08 | 3.22 | 2.60 |
| Households | 819 | 1,772 | 124,010,992 |
| Family Households | 496 | 1,641 | 80,755,759 |
| Married couple, w/children | 17.9% | 44.4% | 30.5% |
| Married couple, no children | 64.5% | 43.0% | 42.9% |
| Non Family Households | 323 | 131 | 43,255,233 |
| Single householder, w/children | 5.2% | 7.3% | 15.8% |
| Single householder, no children | 12.3% | 5.4% | 10.8% |