| | Hatteras, NC | Plymouth, MA | United States |
| Population | 552 | 60,987 | 329,725,481 |
| Female Population | 56.0% | 50.8% | 50.5% |
| Male Population | 44.0% | 49.2% | 49.5% |
| Median Age | 53.2 | 47.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 518 | 56,654 | 309,327,143 |
| Population - 2000 | 635 | 51,701 | 285,036,114 |
| Population - 1990 | 684 | 45,608 | 251,960,433 |
| Pop. 2000 to Now | -34.2% | 21.2% | 15.6% |
| Pop. 1990 to Now | -38.9% | 37.4% | 30.8% |
| space4 | | | |
| Population Density | 350.0 | 632.3 | 93.4 |
| Land Area | 1.6 | 96.4 | 3,531,905.4 |
| Water Area | 0.9 | 37.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Hatteras, NC | Plymouth, MA | United States |
| Age 0 to 4 | 16.3% | 4.2% | 5.9% |
| Age 5 to 9 | 0.0% | 5.0% | 6.1% |
| Age 10 to 14 | 0.2% | 4.7% | 6.6% |
| Age 15 to 17 | 4.5% | 3.1% | 3.9% |
| Age 18 to 20 | 0.2% | 2.3% | 4.0% |
| Age 21 to 24 | 3.1% | 3.8% | 5.2% |
| Age 25 to 34 | 21.4% | 12.3% | 13.8% |
| Age 35 to 44 | 0.0% | 11.0% | 12.9% |
| Age 45 to 54 | 13.2% | 13.2% | 12.6% |
| Age 55 to 59 | 0.2% | 8.6% | 6.7% |
| Age 60 to 64 | 13.6% | 8.7% | 6.3% |
| Age 65 to 74 | 27.4% | 14.6% | 9.6% |
| Age 75 to 84 | 0.0% | 6.2% | 4.5% |
| Age 85 and over | 0.0% | 2.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Hatteras, NC | Plymouth, MA | United States |
| White | 97.6% | 91.2% | 59.4% |
| Black | 0.0% | 1.3% | 12.2% |
| Asian | 0.0% | 0.9% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.8% | 0.4% |
| Two or More Races | 0.2% | 3.0% | 3.2% |
| Hispanic | 2.2% | 2.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Hatteras, NC | Plymouth, MA | United States |
| Married Population | 65.5% | 57.5% | 49.8% |
| Currently Married | 65.5% | 56.2% | 48.0% |
| Married but Separated | 0.0% | 1.3% | 1.8% |
| Single Population | 34.5% | 42.5% | 50.2% |
| Never Married | 14.1% | 27.1% | 33.8% |
| Divorced | 7.6% | 9.4% | 10.8% |
| Widowed | 12.8% | 6.0% | 5.6% |
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| Household Size | 2.19 | 2.37 | 2.60 |
| Households | 243 | 24,985 | 124,010,992 |
| Family Households | 184 | 17,004 | 80,755,759 |
| Married couple, w/children | 29.9% | 25.8% | 30.5% |
| Married couple, no children | 51.1% | 56.0% | 42.9% |
| Non Family Households | 59 | 7,981 | 43,255,233 |
| Single householder, w/children | 11.4% | 9.7% | 15.8% |
| Single householder, no children | 7.6% | 8.4% | 10.8% |