99138 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Washington based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 99138 is Native American. The majority race/ethnicity attending public schools in 99138 is Native American. The current unemployment level in 99138 is 5.1%.
| Population | 1,103 |
| Population Growth Rate | -5.57% |
| Population Density | 2 People per Square Mile |
| Total Households | 406 |
| Median Household Income (2021) | $41,136 |
| Average Adjusted Gross Income (2021) | $170,120 |
| Current Unemployment Rate (May 2026) | 5.1% |
| Sales Tax Rate (2025) | 8% |
| Majority Race/Ethnicity | Native American - 72.14% |
| Public School Majority Race/Ethnicity | Native American - 80.18% |
99138 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|
| White | 264 | 26.32% |
| Black | 3 | 0.3% |
| Hispanic | 11 | 1.1% |
| Asian | 0 | 0% |
| Native American | 720 | 71.78% |
| Hawaiian/Pac. Islander | 5 | 0.5% |
99138 Public School Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|
| White | 11 | 5.61% |
| Black | 0 | 0% |
| Hispanic | 2 | 1.02% |
| Asian | 0 | 0% |
| Native American | 182 | 92.86% |
| Hawaiian/Pac. Islander | 1 | 0.51% |
99138 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|
| Less Than 1 Year of College | 51 | 8.28% |
| Bachelor Degree | 117 | 18.99% |
| High School Diploma | 194 | 31.49% |
| No High School Diploma | 11 | 1.79% |
| GED or Alternate | 43 | 6.98% |
| 1 or More Years of College | 88 | 14.29% |
| Associates Degree | 98 | 15.91% |
| Masters Degree | 14 | 2.27% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
