| | Margaretville, NY | Delhi, NY | United States |
| Population | 671 | 4,944 | 329,725,481 |
| Female Population | 51.6% | 44.8% | 50.5% |
| Male Population | 48.4% | 55.2% | 49.5% |
| Median Age | 47.9 | 22.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 591 | 5,117 | 309,327,143 |
| Population - 2000 | 643 | 4,629 | 285,036,114 |
| Population - 1990 | 639 | 5,015 | 251,960,433 |
| Pop. 2000 to Now | -15.9% | 2.5% | 15.6% |
| Pop. 1990 to Now | -15.3% | -5.4% | 30.8% |
| space4 | | | |
| Population Density | 981.0 | 77.0 | 93.4 |
| Land Area | 0.7 | 64.2 | 3,531,905.4 |
| Water Area | 0.0 | 0.4 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Margaretville, NY | Delhi, NY | United States |
| Age 0 to 4 | 3.6% | 2.9% | 5.9% |
| Age 5 to 9 | 6.3% | 3.0% | 6.1% |
| Age 10 to 14 | 6.1% | 1.9% | 6.6% |
| Age 15 to 17 | 0.4% | 3.1% | 3.9% |
| Age 18 to 20 | 9.1% | 30.1% | 4.0% |
| Age 21 to 24 | 0.0% | 10.3% | 5.2% |
| Age 25 to 34 | 9.2% | 5.5% | 13.8% |
| Age 35 to 44 | 7.0% | 8.4% | 12.9% |
| Age 45 to 54 | 11.0% | 6.2% | 12.6% |
| Age 55 to 59 | 4.5% | 5.1% | 6.7% |
| Age 60 to 64 | 10.9% | 7.3% | 6.3% |
| Age 65 to 74 | 12.1% | 9.6% | 9.6% |
| Age 75 to 84 | 8.9% | 3.4% | 4.5% |
| Age 85 and over | 10.9% | 3.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Margaretville, NY | Delhi, NY | United States |
| White | 58.6% | 87.1% | 59.4% |
| Black | 3.9% | 3.5% | 12.2% |
| Asian | 0.0% | 1.8% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.0% | 1.0% | 0.4% |
| Two or More Races | 2.7% | 1.0% | 3.2% |
| Hispanic | 34.9% | 5.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Margaretville, NY | Delhi, NY | United States |
| Married Population | 44.5% | 26.7% | 49.8% |
| Currently Married | 41.7% | 26.0% | 48.0% |
| Married but Separated | 2.8% | 0.7% | 1.8% |
| Single Population | 55.5% | 73.3% | 50.2% |
| Never Married | 28.5% | 57.2% | 33.8% |
| Divorced | 9.6% | 10.4% | 10.8% |
| Widowed | 17.4% | 5.6% | 5.6% |
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| Household Size | 2.17 | 2.24 | 2.60 |
| Households | 276 | 1,453 | 124,010,992 |
| Family Households | 150 | 777 | 80,755,759 |
| Married couple, w/children | 38.7% | 16.7% | 30.5% |
| Married couple, no children | 34.7% | 51.5% | 42.9% |
| Non Family Households | 126 | 676 | 43,255,233 |
| Single householder, w/children | 20.0% | 22.3% | 15.8% |
| Single householder, no children | 6.7% | 9.5% | 10.8% |