| | Chesterfield, SC | Morrisville, PA | United States |
| Population | 1,404 | 9,675 | 329,725,481 |
| Female Population | 45.4% | 44.4% | 50.5% |
| Male Population | 54.6% | 55.6% | 49.5% |
| Median Age | 39.2 | 40 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,469 | 8,725 | 309,327,143 |
| Population - 2000 | 1,318 | 10,023 | 285,036,114 |
| Population - 1990 | 1,373 | 9,765 | 251,960,433 |
| Pop. 2000 to Now | 6.3% | -15.3% | 15.6% |
| Pop. 1990 to Now | 2.0% | -13.1% | 30.8% |
| space4 | | | |
| Population Density | 346.3 | 5,538.1 | 93.4 |
| Land Area | 4.1 | 1.7 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Chesterfield, SC | Morrisville, PA | United States |
| Age 0 to 4 | 3.2% | 6.0% | 5.9% |
| Age 5 to 9 | 7.1% | 5.7% | 6.1% |
| Age 10 to 14 | 7.8% | 4.7% | 6.6% |
| Age 15 to 17 | 7.7% | 4.4% | 3.9% |
| Age 18 to 20 | 2.1% | 3.2% | 4.0% |
| Age 21 to 24 | 3.6% | 3.4% | 5.2% |
| Age 25 to 34 | 13.0% | 14.9% | 13.8% |
| Age 35 to 44 | 13.0% | 13.9% | 12.9% |
| Age 45 to 54 | 10.8% | 13.9% | 12.6% |
| Age 55 to 59 | 7.6% | 10.1% | 6.7% |
| Age 60 to 64 | 3.9% | 5.0% | 6.3% |
| Age 65 to 74 | 9.5% | 11.2% | 9.6% |
| Age 75 to 84 | 7.0% | 2.5% | 4.5% |
| Age 85 and over | 3.8% | 1.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Chesterfield, SC | Morrisville, PA | United States |
| White | 59.4% | 73.6% | 59.4% |
| Black | 36.0% | 13.7% | 12.2% |
| Asian | 0.4% | 0.7% | 5.6% |
| Native American | 0.0% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.3% | 0.0% | 0.4% |
| Two or More Races | 2.0% | 2.9% | 3.2% |
| Hispanic | 1.9% | 8.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Chesterfield, SC | Morrisville, PA | United States |
| Married Population | 42.8% | 48.4% | 49.8% |
| Currently Married | 38.8% | 47.2% | 48.0% |
| Married but Separated | 4.0% | 1.2% | 1.8% |
| Single Population | 57.2% | 51.6% | 50.2% |
| Never Married | 36.8% | 37.2% | 33.8% |
| Divorced | 13.3% | 10.8% | 10.8% |
| Widowed | 7.1% | 3.6% | 5.6% |
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| Household Size | 2.44 | 2.40 | 2.60 |
| Households | 534 | 4,013 | 124,010,992 |
| Family Households | 363 | 2,554 | 80,755,759 |
| Married couple, w/children | 27.8% | 27.7% | 30.5% |
| Married couple, no children | 30.6% | 40.8% | 42.9% |
| Non Family Households | 171 | 1,459 | 43,255,233 |
| Single householder, w/children | 30.0% | 20.8% | 15.8% |
| Single householder, no children | 11.6% | 10.7% | 10.8% |