| | Fairhaven, MA | Mariposa, CA | United States |
| Population | 15,911 | 1,305 | 329,725,481 |
| Female Population | 53.4% | 55.6% | 50.5% |
| Male Population | 46.6% | 44.4% | 49.5% |
| Median Age | 47.8 | 49.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 15,881 | 2,122 | 309,327,143 |
| Population - 2000 | 16,159 | 1,373 | 285,036,114 |
| Population - 1990 | 16,132 | 1,152 | 251,960,433 |
| Pop. 2000 to Now | -0.4% | -5.2% | 15.6% |
| Pop. 1990 to Now | -0.2% | 12.9% | 30.8% |
| space4 | | | |
| Population Density | 1,289.9 | 429.7 | 93.4 |
| Land Area | 12.3 | 3.0 | 3,531,905.4 |
| Water Area | 1.8 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Fairhaven, MA | Mariposa, CA | United States |
| Age 0 to 4 | 3.0% | 1.2% | 5.9% |
| Age 5 to 9 | 5.2% | 7.9% | 6.1% |
| Age 10 to 14 | 6.0% | 2.5% | 6.6% |
| Age 15 to 17 | 3.2% | 5.1% | 3.9% |
| Age 18 to 20 | 3.1% | 0.0% | 4.0% |
| Age 21 to 24 | 4.0% | 1.1% | 5.2% |
| Age 25 to 34 | 11.3% | 12.0% | 13.8% |
| Age 35 to 44 | 11.0% | 13.6% | 12.9% |
| Age 45 to 54 | 13.2% | 15.9% | 12.6% |
| Age 55 to 59 | 9.6% | 8.0% | 6.7% |
| Age 60 to 64 | 8.5% | 4.8% | 6.3% |
| Age 65 to 74 | 11.8% | 13.0% | 9.6% |
| Age 75 to 84 | 5.6% | 8.0% | 4.5% |
| Age 85 and over | 4.5% | 6.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Fairhaven, MA | Mariposa, CA | United States |
| White | 92.9% | 75.4% | 59.4% |
| Black | 0.6% | 0.7% | 12.2% |
| Asian | 1.2% | 0.5% | 5.6% |
| Native American | 0.2% | 1.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.9% | 0.0% | 0.4% |
| Two or More Races | 1.4% | 6.6% | 3.2% |
| Hispanic | 1.8% | 15.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Fairhaven, MA | Mariposa, CA | United States |
| Married Population | 45.1% | 39.3% | 49.8% |
| Currently Married | 44.4% | 39.3% | 48.0% |
| Married but Separated | 0.8% | 0.0% | 1.8% |
| Single Population | 54.9% | 60.7% | 50.2% |
| Never Married | 27.8% | 27.5% | 33.8% |
| Divorced | 16.4% | 19.3% | 10.8% |
| Widowed | 10.7% | 14.0% | 5.6% |
| space5 | | | |
| Household Size | 2.27 | 1.77 | 2.60 |
| Households | 6,872 | 696 | 124,010,992 |
| Family Households | 4,005 | 312 | 80,755,759 |
| Married couple, w/children | 26.5% | 32.1% | 30.5% |
| Married couple, no children | 44.0% | 39.4% | 42.9% |
| Non Family Households | 2,867 | 384 | 43,255,233 |
| Single householder, w/children | 12.1% | 19.9% | 15.8% |
| Single householder, no children | 17.4% | 8.7% | 10.8% |