| | Palouse, WA | Plummer, ID | United States |
| Population | 1,008 | 1,037 | 329,725,481 |
| Female Population | 42.1% | 44.6% | 50.5% |
| Male Population | 57.9% | 55.5% | 49.5% |
| Median Age | 48 | 36.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 999 | 1,048 | 309,327,143 |
| Population - 2000 | 1,011 | 990 | 285,036,114 |
| Population - 1990 | 915 | 804 | 251,960,433 |
| Pop. 2000 to Now | 4.4% | 4.7% | 15.6% |
| Pop. 1990 to Now | 15.3% | 28.9% | 30.8% |
| space4 | | | |
| Population Density | 962.8 | 821.7 | 93.4 |
| Land Area | 1.0 | 1.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Palouse, WA | Plummer, ID | United States |
| Age 0 to 4 | 2.9% | 4.9% | 5.9% |
| Age 5 to 9 | 13.2% | 5.3% | 6.1% |
| Age 10 to 14 | 4.3% | 10.1% | 6.6% |
| Age 15 to 17 | 1.6% | 5.2% | 3.9% |
| Age 18 to 20 | 6.3% | 6.4% | 4.0% |
| Age 21 to 24 | 3.5% | 9.1% | 5.2% |
| Age 25 to 34 | 4.9% | 8.0% | 13.8% |
| Age 35 to 44 | 10.9% | 10.0% | 12.9% |
| Age 45 to 54 | 17.3% | 11.6% | 12.6% |
| Age 55 to 59 | 9.2% | 8.5% | 6.7% |
| Age 60 to 64 | 8.8% | 11.4% | 6.3% |
| Age 65 to 74 | 11.4% | 6.1% | 9.6% |
| Age 75 to 84 | 4.0% | 2.8% | 4.5% |
| Age 85 and over | 1.8% | 0.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Palouse, WA | Plummer, ID | United States |
| White | 87.4% | 41.0% | 59.4% |
| Black | 0.0% | 5.6% | 12.2% |
| Asian | 2.9% | 0.3% | 5.6% |
| Native American | 0.5% | 34.5% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.6% | 0.2% |
| Other | 5.1% | 0.0% | 0.4% |
| Two or More Races | 3.1% | 7.4% | 3.2% |
| Hispanic | 1.1% | 10.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Palouse, WA | Plummer, ID | United States |
| Married Population | 54.5% | 38.3% | 49.8% |
| Currently Married | 52.9% | 36.9% | 48.0% |
| Married but Separated | 1.6% | 1.3% | 1.8% |
| Single Population | 45.5% | 61.7% | 50.2% |
| Never Married | 22.3% | 38.1% | 33.8% |
| Divorced | 19.1% | 21.6% | 10.8% |
| Widowed | 4.1% | 2.1% | 5.6% |
| space5 | | | |
| Household Size | 2.27 | 3.01 | 2.60 |
| Households | 439 | 343 | 124,010,992 |
| Family Households | 256 | 199 | 80,755,759 |
| Married couple, w/children | 33.6% | 21.6% | 30.5% |
| Married couple, no children | 50.0% | 42.2% | 42.9% |
| Non Family Households | 183 | 144 | 43,255,233 |
| Single householder, w/children | 5.9% | 24.1% | 15.8% |
| Single householder, no children | 10.5% | 12.1% | 10.8% |