| | Farmington, NY | Farmington, NM | United States |
| Population | 14,108 | 46,696 | 329,725,481 |
| Female Population | 52.1% | 50.9% | 50.5% |
| Male Population | 47.9% | 49.1% | 49.5% |
| Median Age | 36.1 | 34.7 | 38.4 |
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| Population - 2010 | 12,129 | 46,037 | 309,327,143 |
| Population - 2000 | 10,585 | 37,844 | 285,036,114 |
| Population - 1990 | 10,381 | 33,997 | 251,960,433 |
| Pop. 2000 to Now | 31.8% | 16.7% | 15.6% |
| Pop. 1990 to Now | 34.4% | 29.9% | 30.8% |
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| Population Density | 357.8 | 1,355.9 | 93.4 |
| Land Area | 39.4 | 34.4 | 3,531,905.4 |
| Water Area | 0.0 | 0.5 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Farmington, NY | Farmington, NM | United States |
| Age 0 to 4 | 6.9% | 7.5% | 5.9% |
| Age 5 to 9 | 6.3% | 7.1% | 6.1% |
| Age 10 to 14 | 7.6% | 9.0% | 6.6% |
| Age 15 to 17 | 3.4% | 5.1% | 3.9% |
| Age 18 to 20 | 2.0% | 5.0% | 4.0% |
| Age 21 to 24 | 5.3% | 4.7% | 5.2% |
| Age 25 to 34 | 15.0% | 12.1% | 13.8% |
| Age 35 to 44 | 13.8% | 14.7% | 12.9% |
| Age 45 to 54 | 11.3% | 10.4% | 12.6% |
| Age 55 to 59 | 6.9% | 5.4% | 6.7% |
| Age 60 to 64 | 6.5% | 5.2% | 6.3% |
| Age 65 to 74 | 9.3% | 7.9% | 9.6% |
| Age 75 to 84 | 4.6% | 3.6% | 4.5% |
| Age 85 and over | 1.0% | 2.2% | 1.9% |
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| Race | | | |
| | Farmington, NY | Farmington, NM | United States |
| White | 89.2% | 42.7% | 59.4% |
| Black | 2.3% | 1.0% | 12.2% |
| Asian | 1.6% | 0.8% | 5.6% |
| Native American | 0.0% | 25.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.1% | 0.3% | 0.4% |
| Two or More Races | 3.0% | 4.2% | 3.2% |
| Hispanic | 3.8% | 25.7% | 18.4% |
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| Marriage & Family | | | |
| | Farmington, NY | Farmington, NM | United States |
| Married Population | 49.2% | 45.1% | 49.8% |
| Currently Married | 48.1% | 43.8% | 48.0% |
| Married but Separated | 1.1% | 1.2% | 1.8% |
| Single Population | 50.8% | 54.9% | 50.2% |
| Never Married | 34.5% | 38.0% | 33.8% |
| Divorced | 12.3% | 11.9% | 10.8% |
| Widowed | 4.0% | 5.0% | 5.6% |
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| Household Size | 2.52 | 2.92 | 2.60 |
| Households | 5,576 | 15,500 | 124,010,992 |
| Family Households | 3,714 | 11,005 | 80,755,759 |
| Married couple, w/children | 29.2% | 29.2% | 30.5% |
| Married couple, no children | 40.5% | 37.4% | 42.9% |
| Non Family Households | 1,862 | 4,495 | 43,255,233 |
| Single householder, w/children | 23.3% | 23.0% | 15.8% |
| Single householder, no children | 7.0% | 10.4% | 10.8% |