| | Point Roberts, WA | St. Joseph, MO | United States |
| Population | 1,210 | 73,138 | 329,725,481 |
| Female Population | 52.2% | 49.5% | 50.5% |
| Male Population | 47.8% | 50.6% | 49.5% |
| Median Age | 58.3 | 37.7 | 38.4 |
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| Population - 2010 | 1,285 | 76,657 | 309,327,143 |
| Population - 2000 | 1,287 | 73,990 | 285,036,114 |
| Population - 1990 | 916 | 71,852 | 251,960,433 |
| Pop. 2000 to Now | 6.0% | 0.1% | 15.6% |
| Pop. 1990 to Now | 48.9% | 3.1% | 30.8% |
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| Population Density | 247.7 | 1,661.1 | 93.4 |
| Land Area | 4.9 | 44.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.8 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Point Roberts, WA | St. Joseph, MO | United States |
| Age 0 to 4 | 1.4% | 6.3% | 5.9% |
| Age 5 to 9 | 2.1% | 6.5% | 6.1% |
| Age 10 to 14 | 5.8% | 6.2% | 6.6% |
| Age 15 to 17 | 1.7% | 3.5% | 3.9% |
| Age 18 to 20 | 3.0% | 4.4% | 4.0% |
| Age 21 to 24 | 2.1% | 5.8% | 5.2% |
| Age 25 to 34 | 1.6% | 14.0% | 13.8% |
| Age 35 to 44 | 12.3% | 12.8% | 12.9% |
| Age 45 to 54 | 12.3% | 11.5% | 12.6% |
| Age 55 to 59 | 14.1% | 6.6% | 6.7% |
| Age 60 to 64 | 11.9% | 6.5% | 6.3% |
| Age 65 to 74 | 21.7% | 9.2% | 9.6% |
| Age 75 to 84 | 8.3% | 4.6% | 4.5% |
| Age 85 and over | 1.7% | 2.0% | 1.9% |
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| Race | | | |
| | Point Roberts, WA | St. Joseph, MO | United States |
| White | 91.0% | 80.2% | 59.4% |
| Black | 0.0% | 5.9% | 12.2% |
| Asian | 0.9% | 1.5% | 5.6% |
| Native American | 1.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.5% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.8% | 4.0% | 3.2% |
| Hispanic | 5.3% | 7.5% | 18.4% |
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| Marriage & Family | | | |
| | Point Roberts, WA | St. Joseph, MO | United States |
| Married Population | 67.0% | 43.6% | 49.8% |
| Currently Married | 64.0% | 42.0% | 48.0% |
| Married but Separated | 3.0% | 1.5% | 1.8% |
| Single Population | 33.0% | 56.4% | 50.2% |
| Never Married | 13.7% | 33.1% | 33.8% |
| Divorced | 13.7% | 17.3% | 10.8% |
| Widowed | 5.7% | 6.1% | 5.6% |
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| Household Size | 1.90 | 2.43 | 2.60 |
| Households | 636 | 28,594 | 124,010,992 |
| Family Households | 367 | 16,688 | 80,755,759 |
| Married couple, w/children | 15.0% | 27.5% | 30.5% |
| Married couple, no children | 73.0% | 41.5% | 42.9% |
| Non Family Households | 269 | 11,906 | 43,255,233 |
| Single householder, w/children | 9.8% | 22.3% | 15.8% |
| Single householder, no children | 2.2% | 8.7% | 10.8% |