| | Nahant, MA | Lynn, MA | United States |
| Population | 3,354 | 100,233 | 329,725,481 |
| Female Population | 57.1% | 50.2% | 50.5% |
| Male Population | 42.9% | 49.8% | 49.5% |
| Median Age | 58.4 | 36.3 | 38.4 |
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| Population - 2010 | 3,417 | 90,528 | 309,327,143 |
| Population - 2000 | 3,632 | 89,050 | 285,036,114 |
| Population - 1990 | 3,828 | 81,245 | 251,960,433 |
| Pop. 2000 to Now | -3.5% | 6.2% | 15.6% |
| Pop. 1990 to Now | -8.4% | 16.4% | 30.8% |
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| Population Density | 3,206.5 | 9,329.2 | 93.4 |
| Land Area | 1.0 | 10.7 | 3,531,905.4 |
| Water Area | 14.4 | 2.8 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Nahant, MA | Lynn, MA | United States |
| Age 0 to 4 | 3.3% | 6.5% | 5.9% |
| Age 5 to 9 | 2.4% | 6.4% | 6.1% |
| Age 10 to 14 | 1.9% | 6.6% | 6.6% |
| Age 15 to 17 | 3.9% | 4.5% | 3.9% |
| Age 18 to 20 | 3.4% | 4.1% | 4.0% |
| Age 21 to 24 | 2.1% | 5.7% | 5.2% |
| Age 25 to 34 | 5.9% | 14.4% | 13.8% |
| Age 35 to 44 | 10.7% | 14.2% | 12.9% |
| Age 45 to 54 | 12.8% | 13.4% | 12.6% |
| Age 55 to 59 | 8.4% | 5.8% | 6.7% |
| Age 60 to 64 | 15.2% | 5.7% | 6.3% |
| Age 65 to 74 | 20.6% | 7.7% | 9.6% |
| Age 75 to 84 | 5.2% | 3.2% | 4.5% |
| Age 85 and over | 4.1% | 1.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Nahant, MA | Lynn, MA | United States |
| White | 94.1% | 37.8% | 59.4% |
| Black | 1.5% | 11.2% | 12.2% |
| Asian | 1.0% | 4.8% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.3% | 0.9% | 0.4% |
| Two or More Races | 2.7% | 3.2% | 3.2% |
| Hispanic | 0.4% | 41.8% | 18.4% |
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| Marriage & Family | | | |
| | Nahant, MA | Lynn, MA | United States |
| Married Population | 47.0% | 42.7% | 49.8% |
| Currently Married | 45.7% | 39.1% | 48.0% |
| Married but Separated | 1.3% | 3.6% | 1.8% |
| Single Population | 53.0% | 57.3% | 50.2% |
| Never Married | 33.5% | 41.4% | 33.8% |
| Divorced | 12.7% | 10.5% | 10.8% |
| Widowed | 6.8% | 5.4% | 5.6% |
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| Household Size | 1.97 | 2.74 | 2.60 |
| Households | 1,678 | 36,280 | 124,010,992 |
| Family Households | 874 | 23,354 | 80,755,759 |
| Married couple, w/children | 21.3% | 29.4% | 30.5% |
| Married couple, no children | 59.6% | 29.9% | 42.9% |
| Non Family Households | 804 | 12,926 | 43,255,233 |
| Single householder, w/children | 8.4% | 25.2% | 15.8% |
| Single householder, no children | 10.8% | 15.5% | 10.8% |