| | Ludlow, VT | Bath, ME | United States |
| Population | 1,817 | 8,718 | 329,725,481 |
| Female Population | 50.1% | 50.8% | 50.5% |
| Male Population | 49.9% | 49.2% | 49.5% |
| Median Age | 47.6 | 42.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,960 | 8,488 | 309,327,143 |
| Population - 2000 | 2,449 | 9,266 | 285,036,114 |
| Population - 1990 | 2,302 | 9,799 | 251,960,433 |
| Pop. 2000 to Now | -24.2% | -10.1% | 15.6% |
| Pop. 1990 to Now | -19.4% | -14.9% | 30.8% |
| space4 | | | |
| Population Density | 51.7 | 956.0 | 93.4 |
| Land Area | 35.2 | 9.1 | 3,531,905.4 |
| Water Area | 0.5 | 4.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Ludlow, VT | Bath, ME | United States |
| Age 0 to 4 | 4.5% | 5.1% | 5.9% |
| Age 5 to 9 | 7.9% | 4.4% | 6.1% |
| Age 10 to 14 | 2.6% | 9.5% | 6.6% |
| Age 15 to 17 | 2.6% | 2.8% | 3.9% |
| Age 18 to 20 | 1.5% | 2.5% | 4.0% |
| Age 21 to 24 | 4.7% | 4.7% | 5.2% |
| Age 25 to 34 | 14.5% | 13.1% | 13.8% |
| Age 35 to 44 | 9.2% | 11.8% | 12.9% |
| Age 45 to 54 | 14.5% | 12.7% | 12.6% |
| Age 55 to 59 | 8.0% | 5.8% | 6.7% |
| Age 60 to 64 | 5.9% | 7.1% | 6.3% |
| Age 65 to 74 | 14.3% | 13.4% | 9.6% |
| Age 75 to 84 | 6.7% | 5.3% | 4.5% |
| Age 85 and over | 3.1% | 1.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Ludlow, VT | Bath, ME | United States |
| White | 94.4% | 95.1% | 59.4% |
| Black | 0.1% | 0.5% | 12.2% |
| Asian | 0.2% | 0.6% | 5.6% |
| Native American | 0.3% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 3.5% | 2.2% | 3.2% |
| Hispanic | 1.6% | 1.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Ludlow, VT | Bath, ME | United States |
| Married Population | 45.4% | 51.2% | 49.8% |
| Currently Married | 43.6% | 50.4% | 48.0% |
| Married but Separated | 1.8% | 0.8% | 1.8% |
| Single Population | 54.6% | 48.8% | 50.2% |
| Never Married | 32.3% | 28.9% | 33.8% |
| Divorced | 16.1% | 15.6% | 10.8% |
| Widowed | 6.2% | 4.3% | 5.6% |
| space5 | | | |
| Household Size | 2.14 | 2.21 | 2.60 |
| Households | 822 | 3,905 | 124,010,992 |
| Family Households | 467 | 2,296 | 80,755,759 |
| Married couple, w/children | 15.8% | 26.6% | 30.5% |
| Married couple, no children | 51.4% | 45.5% | 42.9% |
| Non Family Households | 355 | 1,609 | 43,255,233 |
| Single householder, w/children | 23.8% | 20.6% | 15.8% |
| Single householder, no children | 9.0% | 7.2% | 10.8% |