| | Buchanan Dam, TX | Lakewood, WA | United States |
| Population | 1,344 | 62,972 | 329,725,481 |
| Female Population | 43.8% | 50.7% | 50.5% |
| Male Population | 56.3% | 49.3% | 49.5% |
| Median Age | 62.1 | 35.7 | 38.4 |
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| Population - 2010 | 1,397 | 57,601 | 309,327,143 |
| Population - 2000 | 1,688 | 58,211 | 285,036,114 |
| Population - 1990 | 1,099 | 58,412 | 251,960,433 |
| Pop. 2000 to Now | -5.2% | 4.8% | 15.6% |
| Pop. 1990 to Now | 45.7% | 4.4% | 30.8% |
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| Population Density | 173.5 | 3,685.2 | 93.4 |
| Land Area | 7.7 | 17.1 | 3,531,905.4 |
| Water Area | 12.5 | 1.8 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Buchanan Dam, TX | Lakewood, WA | United States |
| Age 0 to 4 | 5.9% | 5.9% | 5.9% |
| Age 5 to 9 | 3.1% | 6.1% | 6.1% |
| Age 10 to 14 | 3.5% | 6.0% | 6.6% |
| Age 15 to 17 | 1.0% | 3.1% | 3.9% |
| Age 18 to 20 | 0.0% | 2.8% | 4.0% |
| Age 21 to 24 | 2.1% | 7.2% | 5.2% |
| Age 25 to 34 | 8.7% | 17.8% | 13.8% |
| Age 35 to 44 | 6.1% | 12.1% | 12.9% |
| Age 45 to 54 | 9.7% | 10.6% | 12.6% |
| Age 55 to 59 | 6.7% | 5.9% | 6.7% |
| Age 60 to 64 | 8.9% | 6.8% | 6.3% |
| Age 65 to 74 | 28.9% | 9.6% | 9.6% |
| Age 75 to 84 | 15.3% | 4.1% | 4.5% |
| Age 85 and over | 0.0% | 2.0% | 1.9% |
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| Race | | | |
| | Buchanan Dam, TX | Lakewood, WA | United States |
| White | 83.6% | 46.9% | 59.4% |
| Black | 0.0% | 13.1% | 12.2% |
| Asian | 0.5% | 7.9% | 5.6% |
| Native American | 0.8% | 0.8% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 3.7% | 0.2% |
| Other | 0.0% | 0.4% | 0.4% |
| Two or More Races | 4.5% | 9.8% | 3.2% |
| Hispanic | 10.6% | 17.5% | 18.4% |
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| Marriage & Family | | | |
| | Buchanan Dam, TX | Lakewood, WA | United States |
| Married Population | 71.4% | 46.5% | 49.8% |
| Currently Married | 71.0% | 44.1% | 48.0% |
| Married but Separated | 0.3% | 2.4% | 1.8% |
| Single Population | 28.6% | 53.5% | 50.2% |
| Never Married | 7.5% | 33.0% | 33.8% |
| Divorced | 14.7% | 15.2% | 10.8% |
| Widowed | 6.5% | 5.2% | 5.6% |
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| Household Size | 2.10 | 2.44 | 2.60 |
| Households | 641 | 25,323 | 124,010,992 |
| Family Households | 444 | 15,300 | 80,755,759 |
| Married couple, w/children | 11.7% | 24.2% | 30.5% |
| Married couple, no children | 84.2% | 43.2% | 42.9% |
| Non Family Households | 197 | 10,023 | 43,255,233 |
| Single householder, w/children | 2.0% | 20.3% | 15.8% |
| Single householder, no children | 2.0% | 12.3% | 10.8% |