| | Farmingdale, ME | South Portland, ME | United States |
| Population | 2,987 | 26,428 | 329,725,481 |
| Female Population | 51.2% | 51.0% | 50.5% |
| Male Population | 48.9% | 49.1% | 49.5% |
| Median Age | 40.3 | 43.2 | 38.4 |
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| Population - 2010 | 2,967 | 24,994 | 309,327,143 |
| Population - 2000 | 2,804 | 23,324 | 285,036,114 |
| Population - 1990 | 2,918 | 23,163 | 251,960,433 |
| Pop. 2000 to Now | 4.3% | 11.3% | 15.6% |
| Pop. 1990 to Now | 0.2% | 12.0% | 30.8% |
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| Population Density | 265.8 | 2,192.7 | 93.4 |
| Land Area | 11.2 | 12.1 | 3,531,905.4 |
| Water Area | 0.3 | 2.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Farmingdale, ME | South Portland, ME | United States |
| Age 0 to 4 | 6.1% | 3.4% | 5.9% |
| Age 5 to 9 | 7.9% | 3.1% | 6.1% |
| Age 10 to 14 | 7.4% | 4.9% | 6.6% |
| Age 15 to 17 | 4.8% | 3.8% | 3.9% |
| Age 18 to 20 | 4.8% | 3.7% | 4.0% |
| Age 21 to 24 | 5.5% | 7.0% | 5.2% |
| Age 25 to 34 | 6.8% | 15.0% | 13.8% |
| Age 35 to 44 | 12.2% | 11.2% | 12.9% |
| Age 45 to 54 | 16.3% | 12.3% | 12.6% |
| Age 55 to 59 | 5.7% | 8.6% | 6.7% |
| Age 60 to 64 | 3.9% | 6.5% | 6.3% |
| Age 65 to 74 | 7.6% | 12.5% | 9.6% |
| Age 75 to 84 | 9.2% | 6.1% | 4.5% |
| Age 85 and over | 2.1% | 1.8% | 1.9% |
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| Race | | | |
| | Farmingdale, ME | South Portland, ME | United States |
| White | 95.9% | 87.0% | 59.4% |
| Black | 0.0% | 5.0% | 12.2% |
| Asian | 0.0% | 2.1% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.6% | 2.8% | 3.2% |
| Hispanic | 1.4% | 2.9% | 18.4% |
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| Marriage & Family | | | |
| | Farmingdale, ME | South Portland, ME | United States |
| Married Population | 52.4% | 43.7% | 49.8% |
| Currently Married | 48.3% | 43.2% | 48.0% |
| Married but Separated | 4.0% | 0.5% | 1.8% |
| Single Population | 47.6% | 56.3% | 50.2% |
| Never Married | 23.3% | 35.6% | 33.8% |
| Divorced | 16.1% | 14.8% | 10.8% |
| Widowed | 8.3% | 5.9% | 5.6% |
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| Household Size | 2.13 | 2.21 | 2.60 |
| Households | 1,381 | 11,672 | 124,010,992 |
| Family Households | 768 | 6,497 | 80,755,759 |
| Married couple, w/children | 22.0% | 26.0% | 30.5% |
| Married couple, no children | 49.0% | 49.4% | 42.9% |
| Non Family Households | 613 | 5,175 | 43,255,233 |
| Single householder, w/children | 22.8% | 10.1% | 15.8% |
| Single householder, no children | 6.3% | 14.5% | 10.8% |