| | Colonial Beach, VA | Easton, MD | United States |
| Population | 3,838 | 16,912 | 329,725,481 |
| Female Population | 51.5% | 53.6% | 50.5% |
| Male Population | 48.5% | 46.4% | 49.5% |
| Median Age | 46.1 | 43.3 | 38.4 |
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| Population - 2010 | 3,544 | 16,285 | 309,327,143 |
| Population - 2000 | 3,228 | 11,708 | 285,036,114 |
| Population - 1990 | 3,132 | 9,372 | 251,960,433 |
| Pop. 2000 to Now | 12.9% | 41.9% | 15.6% |
| Pop. 1990 to Now | 16.4% | 77.2% | 30.8% |
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| Population Density | 1,505.1 | 1,474.5 | 93.4 |
| Land Area | 2.6 | 11.5 | 3,531,905.4 |
| Water Area | 0.3 | 0.1 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Colonial Beach, VA | Easton, MD | United States |
| Age 0 to 4 | 5.9% | 5.2% | 5.9% |
| Age 5 to 9 | 7.2% | 7.0% | 6.1% |
| Age 10 to 14 | 6.7% | 6.7% | 6.6% |
| Age 15 to 17 | 1.4% | 3.9% | 3.9% |
| Age 18 to 20 | 1.4% | 2.9% | 4.0% |
| Age 21 to 24 | 1.5% | 2.5% | 5.2% |
| Age 25 to 34 | 9.1% | 13.8% | 13.8% |
| Age 35 to 44 | 15.2% | 9.9% | 12.9% |
| Age 45 to 54 | 10.8% | 11.5% | 12.6% |
| Age 55 to 59 | 6.7% | 6.0% | 6.7% |
| Age 60 to 64 | 7.9% | 5.6% | 6.3% |
| Age 65 to 74 | 19.7% | 10.3% | 9.6% |
| Age 75 to 84 | 4.8% | 7.4% | 4.5% |
| Age 85 and over | 1.4% | 7.2% | 1.9% |
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| Race | | | |
| | Colonial Beach, VA | Easton, MD | United States |
| White | 79.5% | 68.4% | 59.4% |
| Black | 13.3% | 13.7% | 12.2% |
| Asian | 2.2% | 1.7% | 5.6% |
| Native American | 0.8% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.6% | 0.4% |
| Two or More Races | 0.8% | 5.0% | 3.2% |
| Hispanic | 3.4% | 10.7% | 18.4% |
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| Marriage & Family | | | |
| | Colonial Beach, VA | Easton, MD | United States |
| Married Population | 37.7% | 47.0% | 49.8% |
| Currently Married | 36.5% | 44.4% | 48.0% |
| Married but Separated | 1.2% | 2.6% | 1.8% |
| Single Population | 62.3% | 53.0% | 50.2% |
| Never Married | 22.9% | 31.3% | 33.8% |
| Divorced | 28.8% | 10.2% | 10.8% |
| Widowed | 10.6% | 11.5% | 5.6% |
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| Household Size | 2.16 | 2.36 | 2.60 |
| Households | 1,757 | 7,014 | 124,010,992 |
| Family Households | 825 | 4,072 | 80,755,759 |
| Married couple, w/children | 15.6% | 30.7% | 30.5% |
| Married couple, no children | 38.1% | 39.5% | 42.9% |
| Non Family Households | 932 | 2,942 | 43,255,233 |
| Single householder, w/children | 29.2% | 19.9% | 15.8% |
| Single householder, no children | 17.1% | 9.9% | 10.8% |