| | Spangle, WA | Fairfield, WA | United States |
| Population | 265 | 556 | 329,725,481 |
| Female Population | 43.8% | 48.4% | 50.5% |
| Male Population | 56.2% | 51.6% | 49.5% |
| Median Age | 39.1 | 41 | 38.4 |
| space3 | | | |
| Population - 2010 | 278 | 614 | 309,327,143 |
| Population - 2000 | 240 | 494 | 285,036,114 |
| Population - 1990 | 229 | 446 | 251,960,433 |
| Pop. 2000 to Now | 35.4% | 27.7% | 15.6% |
| Pop. 1990 to Now | 41.9% | 41.5% | 30.8% |
| space4 | | | |
| Population Density | 759.3 | 905.5 | 93.4 |
| Land Area | 0.3 | 0.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Spangle, WA | Fairfield, WA | United States |
| Age 0 to 4 | 6.8% | 0.7% | 5.9% |
| Age 5 to 9 | 4.9% | 7.2% | 6.1% |
| Age 10 to 14 | 0.0% | 11.5% | 6.6% |
| Age 15 to 17 | 7.2% | 2.9% | 3.9% |
| Age 18 to 20 | 4.5% | 1.3% | 4.0% |
| Age 21 to 24 | 5.7% | 3.4% | 5.2% |
| Age 25 to 34 | 19.2% | 13.3% | 13.8% |
| Age 35 to 44 | 16.2% | 15.3% | 12.9% |
| Age 45 to 54 | 12.8% | 10.8% | 12.6% |
| Age 55 to 59 | 6.4% | 3.2% | 6.7% |
| Age 60 to 64 | 1.9% | 5.6% | 6.3% |
| Age 65 to 74 | 9.1% | 17.1% | 9.6% |
| Age 75 to 84 | 2.6% | 3.8% | 4.5% |
| Age 85 and over | 2.6% | 4.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Spangle, WA | Fairfield, WA | United States |
| White | 90.9% | 89.2% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 2.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 6.8% | 0.9% | 0.4% |
| Two or More Races | 1.5% | 4.1% | 3.2% |
| Hispanic | 0.8% | 3.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Spangle, WA | Fairfield, WA | United States |
| Married Population | 53.0% | 54.2% | 49.8% |
| Currently Married | 51.3% | 52.2% | 48.0% |
| Married but Separated | 1.7% | 2.0% | 1.8% |
| Single Population | 47.0% | 45.8% | 50.2% |
| Never Married | 33.3% | 25.4% | 33.8% |
| Divorced | 9.8% | 13.4% | 10.8% |
| Widowed | 3.8% | 6.9% | 5.6% |
| space5 | | | |
| Household Size | 2.25 | 2.70 | 2.60 |
| Households | 118 | 189 | 124,010,992 |
| Family Households | 58 | 141 | 80,755,759 |
| Married couple, w/children | 62.1% | 27.7% | 30.5% |
| Married couple, no children | 25.9% | 48.2% | 42.9% |
| Non Family Households | 60 | 48 | 43,255,233 |
| Single householder, w/children | 0.0% | 13.5% | 15.8% |
| Single householder, no children | 12.1% | 10.6% | 10.8% |