| | Kremlin, MT | St. Paul, AK | United States |
| Population | 51 | 351 | 329,725,481 |
| Female Population | 51.0% | 33.6% | 50.5% |
| Male Population | 49.0% | 66.4% | 49.5% |
| Median Age | 61.9 | 44.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 133 | 478 | 309,327,143 |
| Population - 2000 | 126 | 532 | 285,036,114 |
| Population - 1990 | 105 | 763 | 251,960,433 |
| Pop. 2000 to Now | -22.2% | -8.8% | 15.6% |
| Pop. 1990 to Now | -6.7% | -36.4% | 30.8% |
| space4 | | | |
| Population Density | 115.7 | 8.7 | 93.4 |
| Land Area | 0.4 | 40.3 | 3,531,905.4 |
| Water Area | 0.0 | 255.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Kremlin, MT | St. Paul, AK | United States |
| Age 0 to 4 | 0.0% | 5.4% | 5.9% |
| Age 5 to 9 | 0.0% | 5.7% | 6.1% |
| Age 10 to 14 | 0.0% | 5.7% | 6.6% |
| Age 15 to 17 | 0.0% | 4.0% | 3.9% |
| Age 18 to 20 | 3.9% | 5.1% | 4.0% |
| Age 21 to 24 | 0.0% | 2.6% | 5.2% |
| Age 25 to 34 | 0.0% | 13.7% | 13.8% |
| Age 35 to 44 | 0.0% | 9.7% | 12.9% |
| Age 45 to 54 | 9.8% | 18.8% | 12.6% |
| Age 55 to 59 | 7.8% | 7.7% | 6.7% |
| Age 60 to 64 | 47.1% | 5.1% | 6.3% |
| Age 65 to 74 | 27.5% | 14.2% | 9.6% |
| Age 75 to 84 | 0.0% | 2.3% | 4.5% |
| Age 85 and over | 3.9% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Kremlin, MT | St. Paul, AK | United States |
| White | 100.0% | 4.8% | 59.4% |
| Black | 0.0% | 2.3% | 12.2% |
| Asian | 0.0% | 0.9% | 5.6% |
| Native American | 0.0% | 80.9% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 8.0% | 3.2% |
| Hispanic | 0.0% | 3.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Kremlin, MT | St. Paul, AK | United States |
| Married Population | 54.9% | 34.2% | 49.8% |
| Currently Married | 54.9% | 33.9% | 48.0% |
| Married but Separated | 0.0% | 0.3% | 1.8% |
| Single Population | 45.1% | 65.8% | 50.2% |
| Never Married | 11.8% | 47.3% | 33.8% |
| Divorced | 0.0% | 11.3% | 10.8% |
| Widowed | 33.3% | 7.2% | 5.6% |
| space5 | | | |
| Household Size | 1.42 | 3.30 | 2.60 |
| Households | 36 | 86 | 124,010,992 |
| Family Households | 15 | 49 | 80,755,759 |
| Married couple, w/children | 0.0% | 18.4% | 30.5% |
| Married couple, no children | 100.0% | 34.7% | 42.9% |
| Non Family Households | 21 | 37 | 43,255,233 |
| Single householder, w/children | 0.0% | 30.6% | 15.8% |
| Single householder, no children | 0.0% | 16.3% | 10.8% |