| | Montrose, PA | Otisville, NY | United States |
| Population | 1,363 | 1,550 | 329,725,481 |
| Female Population | 50.7% | 51.0% | 50.5% |
| Male Population | 49.3% | 49.0% | 49.5% |
| Median Age | 41.8 | 35.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,622 | 1,081 | 309,327,143 |
| Population - 2000 | 1,664 | 989 | 285,036,114 |
| Population - 1990 | 1,982 | 1,078 | 251,960,433 |
| Pop. 2000 to Now | -12.0% | 6.9% | 15.6% |
| Pop. 1990 to Now | -26.1% | -2.0% | 30.8% |
| space4 | | | |
| Population Density | 1,059.1 | 2,028.8 | 93.4 |
| Land Area | 1.3 | 0.8 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Montrose, PA | Otisville, NY | United States |
| Age 0 to 4 | 3.0% | 4.8% | 5.9% |
| Age 5 to 9 | 4.5% | 7.2% | 6.1% |
| Age 10 to 14 | 7.6% | 13.4% | 6.6% |
| Age 15 to 17 | 4.8% | 4.2% | 3.9% |
| Age 18 to 20 | 2.3% | 2.2% | 4.0% |
| Age 21 to 24 | 3.6% | 3.0% | 5.2% |
| Age 25 to 34 | 15.3% | 13.2% | 13.8% |
| Age 35 to 44 | 13.9% | 15.9% | 12.9% |
| Age 45 to 54 | 8.6% | 10.3% | 12.6% |
| Age 55 to 59 | 9.7% | 3.2% | 6.7% |
| Age 60 to 64 | 5.4% | 7.0% | 6.3% |
| Age 65 to 74 | 12.8% | 11.7% | 9.6% |
| Age 75 to 84 | 6.6% | 1.7% | 4.5% |
| Age 85 and over | 2.0% | 2.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Montrose, PA | Otisville, NY | United States |
| White | 96.2% | 57.6% | 59.4% |
| Black | 0.0% | 1.7% | 12.2% |
| Asian | 1.0% | 12.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.5% | 5.2% | 3.2% |
| Hispanic | 0.4% | 23.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Montrose, PA | Otisville, NY | United States |
| Married Population | 45.8% | 53.9% | 49.8% |
| Currently Married | 42.3% | 50.9% | 48.0% |
| Married but Separated | 3.5% | 3.0% | 1.8% |
| Single Population | 54.2% | 46.1% | 50.2% |
| Never Married | 32.9% | 31.5% | 33.8% |
| Divorced | 15.3% | 8.8% | 10.8% |
| Widowed | 6.0% | 5.8% | 5.6% |
| space5 | | | |
| Household Size | 2.37 | 3.16 | 2.60 |
| Households | 576 | 491 | 124,010,992 |
| Family Households | 318 | 403 | 80,755,759 |
| Married couple, w/children | 22.6% | 39.0% | 30.5% |
| Married couple, no children | 49.1% | 30.5% | 42.9% |
| Non Family Households | 258 | 88 | 43,255,233 |
| Single householder, w/children | 10.1% | 13.6% | 15.8% |
| Single householder, no children | 18.2% | 16.9% | 10.8% |