| | St. James, MO | Garfield, AR | United States |
| Population | 3,970 | 465 | 329,725,481 |
| Female Population | 51.5% | 50.8% | 50.5% |
| Male Population | 48.5% | 49.3% | 49.5% |
| Median Age | 30.3 | 54.1 | 38.4 |
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| Population - 2010 | 4,215 | 526 | 309,327,143 |
| Population - 2000 | 3,704 | 490 | 285,036,114 |
| Population - 1990 | 3,256 | 308 | 251,960,433 |
| Pop. 2000 to Now | 8.2% | 21.8% | 15.6% |
| Pop. 1990 to Now | 23.0% | 93.8% | 30.8% |
| space4 | | | |
| Population Density | 928.7 | 150.7 | 93.4 |
| Land Area | 4.3 | 3.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | St. James, MO | Garfield, AR | United States |
| Age 0 to 4 | 11.0% | 2.4% | 5.9% |
| Age 5 to 9 | 7.9% | 4.3% | 6.1% |
| Age 10 to 14 | 11.1% | 5.4% | 6.6% |
| Age 15 to 17 | 4.6% | 0.6% | 3.9% |
| Age 18 to 20 | 1.5% | 1.7% | 4.0% |
| Age 21 to 24 | 5.6% | 4.1% | 5.2% |
| Age 25 to 34 | 16.4% | 8.2% | 13.8% |
| Age 35 to 44 | 7.5% | 10.1% | 12.9% |
| Age 45 to 54 | 8.6% | 16.1% | 12.6% |
| Age 55 to 59 | 8.4% | 12.5% | 6.7% |
| Age 60 to 64 | 4.1% | 4.1% | 6.3% |
| Age 65 to 74 | 5.5% | 20.9% | 9.6% |
| Age 75 to 84 | 4.8% | 8.0% | 4.5% |
| Age 85 and over | 3.1% | 1.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | St. James, MO | Garfield, AR | United States |
| White | 90.0% | 90.3% | 59.4% |
| Black | 0.7% | 0.2% | 12.2% |
| Asian | 0.6% | 0.0% | 5.6% |
| Native American | 0.7% | 1.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.4% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.3% | 7.1% | 3.2% |
| Hispanic | 5.7% | 0.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | St. James, MO | Garfield, AR | United States |
| Married Population | 50.2% | 66.3% | 49.8% |
| Currently Married | 47.3% | 65.8% | 48.0% |
| Married but Separated | 2.9% | 0.5% | 1.8% |
| Single Population | 49.8% | 33.7% | 50.2% |
| Never Married | 27.7% | 11.2% | 33.8% |
| Divorced | 15.1% | 15.9% | 10.8% |
| Widowed | 7.0% | 6.6% | 5.6% |
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| Household Size | 2.54 | 2.35 | 2.60 |
| Households | 1,464 | 198 | 124,010,992 |
| Family Households | 1,033 | 154 | 80,755,759 |
| Married couple, w/children | 33.8% | 12.3% | 30.5% |
| Married couple, no children | 25.8% | 68.8% | 42.9% |
| Non Family Households | 431 | 44 | 43,255,233 |
| Single householder, w/children | 36.0% | 9.7% | 15.8% |
| Single householder, no children | 4.4% | 9.1% | 10.8% |