| | Lisbon, CT | Salem, CT | United States |
| Population | 4,198 | 4,186 | 329,725,481 |
| Female Population | 50.4% | 49.0% | 50.5% |
| Male Population | 49.6% | 51.0% | 49.5% |
| Median Age | 43.7 | 37.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,337 | 4,146 | 309,327,143 |
| Population - 2000 | 4,069 | 3,858 | 285,036,114 |
| Population - 1990 | 3,790 | 3,310 | 251,960,433 |
| Pop. 2000 to Now | 4.2% | 5.8% | 15.6% |
| Pop. 1990 to Now | 11.8% | 23.4% | 30.8% |
| space4 | | | |
| Population Density | 257.6 | 144.7 | 93.4 |
| Land Area | 16.3 | 28.9 | 3,531,905.4 |
| Water Area | 0.4 | 0.8 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Lisbon, CT | Salem, CT | United States |
| Age 0 to 4 | 3.9% | 4.4% | 5.9% |
| Age 5 to 9 | 10.1% | 10.8% | 6.1% |
| Age 10 to 14 | 6.4% | 5.3% | 6.6% |
| Age 15 to 17 | 4.0% | 2.1% | 3.9% |
| Age 18 to 20 | 3.2% | 0.9% | 4.0% |
| Age 21 to 24 | 5.1% | 5.5% | 5.2% |
| Age 25 to 34 | 7.6% | 13.6% | 13.8% |
| Age 35 to 44 | 11.2% | 14.2% | 12.9% |
| Age 45 to 54 | 13.2% | 14.3% | 12.6% |
| Age 55 to 59 | 8.2% | 5.9% | 6.7% |
| Age 60 to 64 | 8.9% | 6.0% | 6.3% |
| Age 65 to 74 | 10.8% | 12.2% | 9.6% |
| Age 75 to 84 | 5.0% | 4.6% | 4.5% |
| Age 85 and over | 2.2% | 0.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Lisbon, CT | Salem, CT | United States |
| White | 91.4% | 87.8% | 59.4% |
| Black | 0.3% | 1.3% | 12.2% |
| Asian | 0.9% | 1.3% | 5.6% |
| Native American | 1.7% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 1.6% | 0.4% |
| Two or More Races | 4.5% | 2.1% | 3.2% |
| Hispanic | 1.2% | 5.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Lisbon, CT | Salem, CT | United States |
| Married Population | 56.7% | 67.7% | 49.8% |
| Currently Married | 53.6% | 67.6% | 48.0% |
| Married but Separated | 3.1% | 0.2% | 1.8% |
| Single Population | 43.3% | 32.3% | 50.2% |
| Never Married | 25.2% | 21.9% | 33.8% |
| Divorced | 10.9% | 8.6% | 10.8% |
| Widowed | 7.2% | 1.7% | 5.6% |
| space5 | | | |
| Household Size | 2.51 | 2.52 | 2.60 |
| Households | 1,668 | 1,652 | 124,010,992 |
| Family Households | 1,252 | 1,325 | 80,755,759 |
| Married couple, w/children | 26.1% | 31.8% | 30.5% |
| Married couple, no children | 45.3% | 54.5% | 42.9% |
| Non Family Households | 416 | 327 | 43,255,233 |
| Single householder, w/children | 17.9% | 8.8% | 15.8% |
| Single householder, no children | 10.7% | 4.8% | 10.8% |