| | Falmouth, ME | Langley, WA | United States |
| Population | 12,316 | 1,194 | 329,725,481 |
| Female Population | 50.6% | 58.0% | 50.5% |
| Male Population | 49.4% | 42.0% | 49.5% |
| Median Age | 47.1 | 66.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 11,187 | 1,018 | 309,327,143 |
| Population - 2000 | 10,310 | 959 | 285,036,114 |
| Population - 1990 | 7,610 | 845 | 251,960,433 |
| Pop. 2000 to Now | 20.7% | 19.7% | 15.6% |
| Pop. 1990 to Now | 63.5% | 35.9% | 30.8% |
| space4 | | | |
| Population Density | 419.3 | 1,184.5 | 93.4 |
| Land Area | 29.4 | 1.0 | 3,531,905.4 |
| Water Area | 7.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Falmouth, ME | Langley, WA | United States |
| Age 0 to 4 | 5.5% | 0.6% | 5.9% |
| Age 5 to 9 | 7.4% | 1.8% | 6.1% |
| Age 10 to 14 | 7.3% | 1.9% | 6.6% |
| Age 15 to 17 | 5.6% | 3.9% | 3.9% |
| Age 18 to 20 | 1.6% | 0.8% | 4.0% |
| Age 21 to 24 | 2.4% | 4.3% | 5.2% |
| Age 25 to 34 | 6.5% | 4.4% | 13.8% |
| Age 35 to 44 | 12.5% | 4.0% | 12.9% |
| Age 45 to 54 | 15.9% | 7.0% | 12.6% |
| Age 55 to 59 | 9.0% | 6.5% | 6.7% |
| Age 60 to 64 | 6.8% | 11.3% | 6.3% |
| Age 65 to 74 | 11.4% | 28.8% | 9.6% |
| Age 75 to 84 | 5.7% | 19.8% | 4.5% |
| Age 85 and over | 2.5% | 4.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Falmouth, ME | Langley, WA | United States |
| White | 91.3% | 93.0% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 2.1% | 2.1% | 5.6% |
| Native American | 0.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.6% | 1.9% | 3.2% |
| Hispanic | 4.1% | 2.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Falmouth, ME | Langley, WA | United States |
| Married Population | 64.7% | 56.9% | 49.8% |
| Currently Married | 64.3% | 55.7% | 48.0% |
| Married but Separated | 0.4% | 1.1% | 1.8% |
| Single Population | 35.3% | 43.1% | 50.2% |
| Never Married | 19.1% | 15.1% | 33.8% |
| Divorced | 11.0% | 15.7% | 10.8% |
| Widowed | 5.2% | 12.3% | 5.6% |
| space5 | | | |
| Household Size | 2.51 | 1.83 | 2.60 |
| Households | 4,875 | 654 | 124,010,992 |
| Family Households | 3,546 | 342 | 80,755,759 |
| Married couple, w/children | 43.1% | 10.2% | 30.5% |
| Married couple, no children | 47.4% | 83.0% | 42.9% |
| Non Family Households | 1,329 | 312 | 43,255,233 |
| Single householder, w/children | 6.0% | 4.4% | 15.8% |
| Single householder, no children | 3.5% | 2.3% | 10.8% |