| | Upper Kalskag, AK | Lower Kalskag, AK | United States |
| Population | 225 | 304 | 329,725,481 |
| Female Population | 44.9% | 46.7% | 50.5% |
| Male Population | 55.1% | 53.3% | 49.5% |
| Median Age | 18.7 | 19.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 216 | 290 | 309,327,143 |
| Population - 2000 | 230 | 267 | 285,036,114 |
| Population - 1990 | 172 | 291 | 251,960,433 |
| Pop. 2000 to Now | 2.2% | 17.6% | 15.6% |
| Pop. 1990 to Now | 36.6% | 7.9% | 30.8% |
| space4 | | | |
| Population Density | 63.3 | 244.4 | 93.4 |
| Land Area | 3.6 | 1.2 | 3,531,905.4 |
| Water Area | 0.4 | 0.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Upper Kalskag, AK | Lower Kalskag, AK | United States |
| Age 0 to 4 | 16.4% | 18.1% | 5.9% |
| Age 5 to 9 | 16.9% | 15.8% | 6.1% |
| Age 10 to 14 | 8.4% | 10.9% | 6.6% |
| Age 15 to 17 | 5.8% | 3.0% | 3.9% |
| Age 18 to 20 | 7.6% | 4.3% | 4.0% |
| Age 21 to 24 | 4.0% | 3.0% | 5.2% |
| Age 25 to 34 | 12.0% | 15.1% | 13.8% |
| Age 35 to 44 | 7.1% | 10.2% | 12.9% |
| Age 45 to 54 | 6.7% | 6.3% | 12.6% |
| Age 55 to 59 | 7.6% | 3.0% | 6.7% |
| Age 60 to 64 | 7.1% | 5.3% | 6.3% |
| Age 65 to 74 | 0.4% | 4.6% | 9.6% |
| Age 75 to 84 | 0.0% | 0.7% | 4.5% |
| Age 85 and over | 0.0% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Upper Kalskag, AK | Lower Kalskag, AK | United States |
| White | 5.8% | 2.0% | 59.4% |
| Black | 0.4% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 84.0% | 96.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 9.8% | 2.0% | 3.2% |
| Hispanic | 0.0% | 0.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Upper Kalskag, AK | Lower Kalskag, AK | United States |
| Married Population | 38.9% | 39.9% | 49.8% |
| Currently Married | 37.4% | 36.3% | 48.0% |
| Married but Separated | 1.5% | 3.6% | 1.8% |
| Single Population | 61.1% | 60.1% | 50.2% |
| Never Married | 55.0% | 52.4% | 33.8% |
| Divorced | 6.1% | 4.2% | 10.8% |
| Widowed | 0.0% | 3.6% | 5.6% |
| space5 | | | |
| Household Size | 4.33 | 5.15 | 2.60 |
| Households | 52 | 59 | 124,010,992 |
| Family Households | 38 | 52 | 80,755,759 |
| Married couple, w/children | 57.9% | 28.8% | 30.5% |
| Married couple, no children | 2.6% | 7.7% | 42.9% |
| Non Family Households | 14 | 7 | 43,255,233 |
| Single householder, w/children | 28.9% | 51.9% | 15.8% |
| Single householder, no children | 10.5% | 11.5% | 10.8% |