| | Monson, ME | Baileyville, ME | United States |
| Population | 501 | 1,464 | 329,725,481 |
| Female Population | 43.5% | 55.0% | 50.5% |
| Male Population | 56.5% | 45.0% | 49.5% |
| Median Age | 55.1 | 39.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 686 | 1,521 | 309,327,143 |
| Population - 2000 | 666 | 1,686 | 285,036,114 |
| Population - 1990 | 744 | 2,031 | 251,960,433 |
| Pop. 2000 to Now | -0.2% | -13.6% | 15.6% |
| Pop. 1990 to Now | -10.6% | -28.3% | 30.8% |
| space4 | | | |
| Population Density | 10.7 | 39.4 | 93.4 |
| Land Area | 46.8 | 37.2 | 3,531,905.4 |
| Water Area | 2.3 | 4.8 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Monson, ME | Baileyville, ME | United States |
| Age 0 to 4 | 9.8% | 3.1% | 5.9% |
| Age 5 to 9 | 3.0% | 6.8% | 6.1% |
| Age 10 to 14 | 1.6% | 8.7% | 6.6% |
| Age 15 to 17 | 9.6% | 3.3% | 3.9% |
| Age 18 to 20 | 0.2% | 2.3% | 4.0% |
| Age 21 to 24 | 3.8% | 3.6% | 5.2% |
| Age 25 to 34 | 6.8% | 17.6% | 13.8% |
| Age 35 to 44 | 6.6% | 11.4% | 12.9% |
| Age 45 to 54 | 8.6% | 15.6% | 12.6% |
| Age 55 to 59 | 7.8% | 8.7% | 6.7% |
| Age 60 to 64 | 10.8% | 7.2% | 6.3% |
| Age 65 to 74 | 25.5% | 8.1% | 9.6% |
| Age 75 to 84 | 5.2% | 3.1% | 4.5% |
| Age 85 and over | 0.8% | 0.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Monson, ME | Baileyville, ME | United States |
| White | 96.6% | 90.2% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 0.3% | 5.6% |
| Native American | 0.0% | 3.6% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 3.4% | 2.3% | 3.2% |
| Hispanic | 0.0% | 3.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Monson, ME | Baileyville, ME | United States |
| Married Population | 57.3% | 40.7% | 49.8% |
| Currently Married | 57.3% | 38.4% | 48.0% |
| Married but Separated | 0.0% | 2.4% | 1.8% |
| Single Population | 42.7% | 59.3% | 50.2% |
| Never Married | 28.9% | 31.0% | 33.8% |
| Divorced | 11.7% | 21.5% | 10.8% |
| Widowed | 2.1% | 6.8% | 5.6% |
| space5 | | | |
| Household Size | 2.35 | 2.42 | 2.60 |
| Households | 213 | 605 | 124,010,992 |
| Family Households | 140 | 423 | 80,755,759 |
| Married couple, w/children | 16.4% | 17.0% | 30.5% |
| Married couple, no children | 70.7% | 38.5% | 42.9% |
| Non Family Households | 73 | 182 | 43,255,233 |
| Single householder, w/children | 12.9% | 32.9% | 15.8% |
| Single householder, no children | 0.0% | 11.6% | 10.8% |