| | Harrah, WA | Kittitas, WA | United States |
| Population | 706 | 1,394 | 329,725,481 |
| Female Population | 52.4% | 47.9% | 50.5% |
| Male Population | 47.6% | 52.1% | 49.5% |
| Median Age | 33.6 | 32.1 | 38.4 |
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| Population - 2010 | 626 | 1,365 | 309,327,143 |
| Population - 2000 | 542 | 1,105 | 285,036,114 |
| Population - 1990 | 341 | 843 | 251,960,433 |
| Pop. 2000 to Now | 17.7% | 37.7% | 15.6% |
| Pop. 1990 to Now | 87.1% | 80.4% | 30.8% |
| space4 | | | |
| Population Density | 3,253.5 | 1,766.8 | 93.4 |
| Land Area | 0.2 | 0.8 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Harrah, WA | Kittitas, WA | United States |
| Age 0 to 4 | 4.1% | 2.6% | 5.9% |
| Age 5 to 9 | 7.4% | 10.3% | 6.1% |
| Age 10 to 14 | 9.8% | 12.4% | 6.6% |
| Age 15 to 17 | 5.7% | 6.2% | 3.9% |
| Age 18 to 20 | 3.7% | 1.7% | 4.0% |
| Age 21 to 24 | 6.4% | 5.5% | 5.2% |
| Age 25 to 34 | 14.9% | 15.0% | 13.8% |
| Age 35 to 44 | 10.8% | 7.5% | 12.9% |
| Age 45 to 54 | 15.3% | 9.9% | 12.6% |
| Age 55 to 59 | 4.7% | 4.7% | 6.7% |
| Age 60 to 64 | 4.5% | 7.9% | 6.3% |
| Age 65 to 74 | 5.8% | 9.3% | 9.6% |
| Age 75 to 84 | 6.7% | 5.4% | 4.5% |
| Age 85 and over | 0.4% | 1.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Harrah, WA | Kittitas, WA | United States |
| White | 17.1% | 70.7% | 59.4% |
| Black | 0.1% | 0.7% | 12.2% |
| Asian | 0.6% | 0.0% | 5.6% |
| Native American | 14.6% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.2% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 5.0% | 2.2% | 3.2% |
| Hispanic | 62.6% | 26.3% | 18.4% |
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| Marriage & Family | | | |
| | Harrah, WA | Kittitas, WA | United States |
| Married Population | 47.8% | 52.7% | 49.8% |
| Currently Married | 45.1% | 49.3% | 48.0% |
| Married but Separated | 2.7% | 3.4% | 1.8% |
| Single Population | 52.2% | 47.3% | 50.2% |
| Never Married | 39.6% | 26.3% | 33.8% |
| Divorced | 7.9% | 15.5% | 10.8% |
| Widowed | 4.7% | 5.5% | 5.6% |
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| Household Size | 3.12 | 2.23 | 2.60 |
| Households | 226 | 626 | 124,010,992 |
| Family Households | 178 | 376 | 80,755,759 |
| Married couple, w/children | 25.3% | 22.6% | 30.5% |
| Married couple, no children | 41.6% | 40.2% | 42.9% |
| Non Family Households | 48 | 250 | 43,255,233 |
| Single householder, w/children | 22.5% | 27.4% | 15.8% |
| Single householder, no children | 10.7% | 9.8% | 10.8% |