| | Midland, MD | Cumberland, MD | United States |
| Population | 665 | 19,028 | 329,725,481 |
| Female Population | 47.5% | 51.5% | 50.5% |
| Male Population | 52.5% | 48.6% | 49.5% |
| Median Age | 25.9 | 40.7 | 38.4 |
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| Population - 2010 | 447 | 20,808 | 309,327,143 |
| Population - 2000 | 473 | 21,518 | 285,036,114 |
| Population - 1990 | 574 | 23,706 | 251,960,433 |
| Pop. 2000 to Now | -13.3% | -11.1% | 15.6% |
| Pop. 1990 to Now | -28.6% | -19.3% | 30.8% |
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| Population Density | 4,208.9 | 1,892.6 | 93.4 |
| Land Area | 0.2 | 10.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Midland, MD | Cumberland, MD | United States |
| Age 0 to 4 | 15.5% | 5.1% | 5.9% |
| Age 5 to 9 | 11.1% | 5.6% | 6.1% |
| Age 10 to 14 | 7.1% | 6.4% | 6.6% |
| Age 15 to 17 | 2.6% | 3.2% | 3.9% |
| Age 18 to 20 | 2.3% | 7.0% | 4.0% |
| Age 21 to 24 | 9.2% | 5.2% | 5.2% |
| Age 25 to 34 | 14.6% | 10.0% | 13.8% |
| Age 35 to 44 | 7.1% | 12.3% | 12.9% |
| Age 45 to 54 | 8.7% | 10.7% | 12.6% |
| Age 55 to 59 | 3.6% | 5.4% | 6.7% |
| Age 60 to 64 | 5.6% | 6.6% | 6.3% |
| Age 65 to 74 | 8.1% | 11.9% | 9.6% |
| Age 75 to 84 | 4.7% | 6.9% | 4.5% |
| Age 85 and over | 0.0% | 3.8% | 1.9% |
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| Race | | | |
| | Midland, MD | Cumberland, MD | United States |
| White | 95.0% | 88.9% | 59.4% |
| Black | 0.0% | 4.3% | 12.2% |
| Asian | 0.9% | 0.7% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.3% | 0.0% | 0.2% |
| Other | 0.0% | 0.2% | 0.4% |
| Two or More Races | 3.8% | 3.8% | 3.2% |
| Hispanic | 0.0% | 2.1% | 18.4% |
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| Marriage & Family | | | |
| | Midland, MD | Cumberland, MD | United States |
| Married Population | 56.7% | 39.6% | 49.8% |
| Currently Married | 56.7% | 37.5% | 48.0% |
| Married but Separated | 0.0% | 2.1% | 1.8% |
| Single Population | 43.3% | 60.4% | 50.2% |
| Never Married | 24.3% | 32.9% | 33.8% |
| Divorced | 12.9% | 17.8% | 10.8% |
| Widowed | 6.1% | 9.6% | 5.6% |
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| Household Size | 2.77 | 2.11 | 2.60 |
| Households | 240 | 8,429 | 124,010,992 |
| Family Households | 197 | 4,276 | 80,755,759 |
| Married couple, w/children | 33.0% | 24.8% | 30.5% |
| Married couple, no children | 30.5% | 39.7% | 42.9% |
| Non Family Households | 43 | 4,153 | 43,255,233 |
| Single householder, w/children | 29.9% | 26.5% | 15.8% |
| Single householder, no children | 6.6% | 9.0% | 10.8% |