| | Chesterfield, MA | Sturbridge, MA | United States |
| Population | 1,087 | 9,806 | 329,725,481 |
| Female Population | 51.5% | 52.1% | 50.5% |
| Male Population | 48.5% | 47.9% | 49.5% |
| Median Age | 49 | 42.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,226 | 9,254 | 309,327,143 |
| Population - 2000 | 1,201 | 7,837 | 285,036,114 |
| Population - 1990 | 1,048 | 7,775 | 251,960,433 |
| Pop. 2000 to Now | 4.1% | 22.0% | 15.6% |
| Pop. 1990 to Now | 19.3% | 23.0% | 30.8% |
| space4 | | | |
| Population Density | 35.2 | 263.4 | 93.4 |
| Land Area | 30.9 | 37.2 | 3,531,905.4 |
| Water Area | 0.4 | 1.7 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Chesterfield, MA | Sturbridge, MA | United States |
| Age 0 to 4 | 2.5% | 5.0% | 5.9% |
| Age 5 to 9 | 1.8% | 7.6% | 6.1% |
| Age 10 to 14 | 5.5% | 7.6% | 6.6% |
| Age 15 to 17 | 4.9% | 3.8% | 3.9% |
| Age 18 to 20 | 5.6% | 1.7% | 4.0% |
| Age 21 to 24 | 2.3% | 3.1% | 5.2% |
| Age 25 to 34 | 10.2% | 9.2% | 13.8% |
| Age 35 to 44 | 9.5% | 14.5% | 12.9% |
| Age 45 to 54 | 18.3% | 15.0% | 12.6% |
| Age 55 to 59 | 7.7% | 8.0% | 6.7% |
| Age 60 to 64 | 9.9% | 5.4% | 6.3% |
| Age 65 to 74 | 14.5% | 11.5% | 9.6% |
| Age 75 to 84 | 5.7% | 6.0% | 4.5% |
| Age 85 and over | 1.5% | 1.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Chesterfield, MA | Sturbridge, MA | United States |
| White | 96.8% | 91.4% | 59.4% |
| Black | 0.0% | 0.9% | 12.2% |
| Asian | 0.0% | 3.7% | 5.6% |
| Native American | 0.4% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.4% | 0.4% |
| Two or More Races | 0.0% | 0.7% | 3.2% |
| Hispanic | 2.9% | 2.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Chesterfield, MA | Sturbridge, MA | United States |
| Married Population | 58.3% | 59.4% | 49.8% |
| Currently Married | 58.3% | 59.2% | 48.0% |
| Married but Separated | 0.0% | 0.2% | 1.8% |
| Single Population | 41.7% | 40.6% | 50.2% |
| Never Married | 25.4% | 22.8% | 33.8% |
| Divorced | 11.5% | 13.5% | 10.8% |
| Widowed | 4.8% | 4.3% | 5.6% |
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| Household Size | 2.36 | 2.52 | 2.60 |
| Households | 460 | 3,890 | 124,010,992 |
| Family Households | 330 | 2,990 | 80,755,759 |
| Married couple, w/children | 30.9% | 26.9% | 30.5% |
| Married couple, no children | 54.8% | 46.2% | 42.9% |
| Non Family Households | 130 | 900 | 43,255,233 |
| Single householder, w/children | 5.5% | 16.8% | 15.8% |
| Single householder, no children | 8.8% | 10.1% | 10.8% |