99140 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 99140 is Native American. The majority race/ethnicity attending public schools in 99140 is Native American. The current unemployment level in 99140 is 5.1%.
| Population | 568 |
| Population Growth Rate | 10.76% |
| Population Density | 1 People per Square Mile |
| Total Households | 138 |
| Median Household Income (2021) | $37,262 |
| Average Adjusted Gross Income (2021) | $71,880 |
| Current Unemployment Rate (May 2026) | 5.1% |
| Sales Tax Rate (2025) | 8.0% |
| Majority Race/Ethnicty | Native American - 69.74% |
| Public School Majority Race/Ethnicty | Native American - 91.67% |
99140 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
|---|
| White | 129 | 28.29% |
| Black | 3 | 0.66% |
| Hispanic | 6 | 1.32% |
| Asian | 0 | 0% |
| Native American | 318 | 69.74% |
| Hawaiian/Pac. Islander | 0 | 0% |
99140 Public School Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
|---|
| White | 2 | 5.56% |
| Black | 0 | 0% |
| Hispanic | 1 | 2.78% |
| Asian | 0 | 0% |
| Native American | 33 | 91.67% |
| Hawaiian/Pac. Islander | 0 | 0% |
99140 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
|---|
| Less Than 1 Year of College | 20 | 10.47% |
| Bachelor Degree | 8 | 4.19% |
| High School Diploma | 67 | 35.08% |
| No High School Diploma | 4 | 2.09% |
| GED or Alternate | 8 | 4.19% |
| 1 or More Years of College | 59 | 30.89% |
| Associates Degree | 22 | 11.52% |
| Masters Degree | 3 | 1.57% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |