99156 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 99156 is White. The majority race/ethnicity attending public schools in 99156 is White. The current unemployment level in 99156 is 5.1%.
| Population | 9,132 |
| Population Growth Rate | 10.67% |
| Population Density | 21 People per Square Mile |
| Total Households | 3,475 |
| Percentage High Income Households | 1.3% |
| Median Household Income (2021) | $65,528 |
| Average Adjusted Gross Income (2021) | $511,590 |
| Current Unemployment Rate (May 2026) | 5.1% |
| Sales Tax Rate (2025) | 8.1% |
| Majority Race/Ethnicty | White - 93.97% |
| Public School Majority Race/Ethnicty | White - 85.31% |
99156 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 8,007 | 93.49% |
| Black | 40 | 0.47% |
| Hispanic | 432 | 5.04% |
| Asian | 28 | 0.33% |
| Native American | 14 | 0.16% |
| Hawaiian/Pac. Islander | 44 | 0.51% |
99156 Public School Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 819 | 90.8% |
| Black | 4 | 0.44% |
| Hispanic | 58 | 6.43% |
| Asian | 4 | 0.44% |
| Native American | 14 | 1.55% |
| Hawaiian/Pac. Islander | 3 | 0.33% |
99156 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
| Less Than 1 Year of College | 488 | 9.1% |
| Bachelor Degree | 600 | 11.19% |
| High School Diploma | 1,685 | 31.42% |
| No High School Diploma | 45 | 0.84% |
| GED or Alternate | 377 | 7.03% |
| 1 or More Years of College | 1,156 | 21.56% |
| Associates Degree | 694 | 12.94% |
| Masters Degree | 230 | 4.29% |
| Professional Degree | 60 | 1.12% |
| Doctorate Degree | 28 | 0.52% |