ZIP Code 99110 - Clayton Washington
Overview
ZIP Code 99110 is located in Clayton Washington. 99110 is primarily within Stevens County, with some portions in Spokane County. Regionally, 99110 is located in the Spokane Area.
ZIP Code 99110 Quick Stats
| ZIP Code Name | Clayton |
| Primary County | Stevens County |
| ZIP Code Type | Standard |
| Population (2022) | 1,465 |
| Area Code(s) | 509 |
| Current Time | PDT |
ZIP Code 99110 Map
99110 Demographics
99110 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 99110 is White. The current unemployment level in 99110 is 5.1%.
| Population | 1,465 |
| Population Growth Rate | 1.41% |
| Population Density | 39 People per Square Mile |
| Total Households | 542 |
| Percentage High Income Households | 6.1% |
| Median Household Income (2021) | $58,558 |
| Average Adjusted Gross Income (2021) | $480,830 |
| Current Unemployment Rate (May 2026) | 5.1% |
| Sales Tax Rate (2025) | 8.1% |
| Majority Race/Ethnicity | White - 97.72% |
99110 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 1,545 | 97.35% |
| Black | 0 | 0% |
| Hispanic | 0 | 0% |
| Asian | 0 | 0% |
| Native American | 36 | 2.27% |
| Hawaiian/Pac. Islander | 6 | 0.38% |
99110 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 85 | 10.52% |
| Bachelor Degree | 99 | 12.25% |
| High School Diploma | 205 | 25.37% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 79 | 9.78% |
| 1 or More Years of College | 214 | 26.49% |
| Associates Degree | 49 | 6.06% |
| Masters Degree | 29 | 3.59% |
| Professional Degree | 28 | 3.47% |
| Doctorate Degree | 20 | 2.48% |
99110 Geography
| Coordinates | 48.00851822, -117.57793427 |
| Adjacent ZIP Codes | |
| Region | Spokane Area |
| Metropolitan/Micropolitan Stat Area | Spokane-Spokane Valley, WA |
| Time Zone | Pacific Daylight Time |
| IANA Timezone | America/Los_Angeles |
| Area | 38 Square Miles |
99110 Schools
| School Districts in 99110 | |
| Elementary Schools in 99110 | |
| Middle Schools in 99110 | |
| High Schools in 99110 |
99110 Weather and Climate Data
| Plant Hardiness Zone | Zone 6a: -10F to -5F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | September 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | May 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dsb - Humid Continental Climate - Dry Cool Summer | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 15s - Spokane Valley Outwash Plains | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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