| | Westport, MA | Chincoteague, VA | United States |
| Population | 16,245 | 3,285 | 329,725,481 |
| Female Population | 50.3% | 49.4% | 50.5% |
| Male Population | 49.7% | 50.7% | 49.5% |
| Median Age | 51.5 | 58.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 15,542 | 2,938 | 309,327,143 |
| Population - 2000 | 14,183 | 4,317 | 285,036,114 |
| Population - 1990 | 13,852 | 3,572 | 251,960,433 |
| Pop. 2000 to Now | 13.5% | -33.6% | 15.6% |
| Pop. 1990 to Now | 16.2% | -19.8% | 30.8% |
| space4 | | | |
| Population Density | 325.9 | 354.8 | 93.4 |
| Land Area | 49.8 | 9.3 | 3,531,905.4 |
| Water Area | 14.8 | 28.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Westport, MA | Chincoteague, VA | United States |
| Age 0 to 4 | 3.3% | 3.6% | 5.9% |
| Age 5 to 9 | 4.5% | 3.3% | 6.1% |
| Age 10 to 14 | 4.6% | 2.6% | 6.6% |
| Age 15 to 17 | 3.3% | 5.1% | 3.9% |
| Age 18 to 20 | 3.4% | 3.0% | 4.0% |
| Age 21 to 24 | 3.7% | 0.5% | 5.2% |
| Age 25 to 34 | 7.9% | 7.1% | 13.8% |
| Age 35 to 44 | 10.1% | 9.7% | 12.9% |
| Age 45 to 54 | 17.7% | 8.4% | 12.6% |
| Age 55 to 59 | 8.9% | 9.3% | 6.7% |
| Age 60 to 64 | 8.0% | 7.8% | 6.3% |
| Age 65 to 74 | 14.0% | 25.1% | 9.6% |
| Age 75 to 84 | 8.3% | 12.1% | 4.5% |
| Age 85 and over | 2.3% | 2.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Westport, MA | Chincoteague, VA | United States |
| White | 96.4% | 92.6% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.2% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.3% | 0.0% | 0.4% |
| Two or More Races | 1.6% | 4.8% | 3.2% |
| Hispanic | 1.5% | 2.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Westport, MA | Chincoteague, VA | United States |
| Married Population | 52.8% | 62.0% | 49.8% |
| Currently Married | 51.8% | 61.7% | 48.0% |
| Married but Separated | 1.0% | 0.4% | 1.8% |
| Single Population | 47.2% | 38.0% | 50.2% |
| Never Married | 26.5% | 14.0% | 33.8% |
| Divorced | 13.1% | 10.2% | 10.8% |
| Widowed | 7.5% | 13.7% | 5.6% |
| space5 | | | |
| Household Size | 2.39 | 1.73 | 2.60 |
| Households | 6,782 | 1,884 | 124,010,992 |
| Family Households | 4,733 | 960 | 80,755,759 |
| Married couple, w/children | 18.1% | 26.5% | 30.5% |
| Married couple, no children | 55.9% | 68.9% | 42.9% |
| Non Family Households | 2,049 | 924 | 43,255,233 |
| Single householder, w/children | 12.0% | 3.2% | 15.8% |
| Single householder, no children | 13.9% | 1.5% | 10.8% |