| ZIP Code | 99403 |
| ZIP Code Name | Clarkston |
| Primary County | Asotin County |
| ZIP Code Type | Standard |
| Population (2021) | 20,492 |
| Area Code(s) | 509 |
| Current Time | PDT |
99403 is a United States ZIP Code located in Clarkston Washington. Portions of 99403 are also in Clarkston Heights-Vineland and West Clarkston-Highland and Asotin. 99403 is primarily within Asotin County with some portions in Garfield County. 99403 is within the Spokane Area.
99403 can be classified socioeconically as a Lower Middle Class class zipcode in comparison to other zipcodes in Washington based on Median Household Income and Average Adjusted Gross Income. Measuring level of educational attainment the majority of adults in 99403 have at least a High School Diploma. The majority race/ethnicity residing in 99403 is White. The majority race/ethnicity attending public schools in 99403 is White. The current unemployment level in 99403 is 3.6%.
| Population | 20,492 |
| Population Growth Rate | 0.38% |
| Population Density | 64 People per Square Mile |
| Total Households | 8,353 |
| Percentage High Income Households | 1.8% |
| Median Houshold Income (2021) | $56,872 |
| Average Adjusted Gross Income (2019) | $62,020 |
| Current Unemployment Rate (August 2023) | 3.6% |
| Majority Race/Ethnicty | White - 91.82% |
| Public School Majority Race/Ethnicty | White - 82.06% |
| Race/Ethnicty | Total | Percentage |
|---|---|---|
| White | 18,631 | 91.63% |
| Black | 173 | 0.85% |
| Hispanic | 946 | 4.65% |
| Asian | 255 | 1.25% |
| Native American | 286 | 1.41% |
| Hawaiian/Pac. Islander | 42 | 0.21% |
| Race/Ethnicty | Total | Percentage |
|---|---|---|
| White | 2,077 | 87.16% |
| Black | 26 | 1.09% |
| Hispanic | 213 | 8.94% |
| Asian | 21 | 0.88% |
| Native American | 45 | 1.89% |
| Hawaiian/Pac. Islander | 1 | 0.04% |
| Highest Education Level Attained | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 1,380 | 10.84% |
| Bachelor Degree | 1,409 | 11.07% |
| High School Diploma | 4,026 | 31.63% |
| No High School Diploma | 314 | 2.47% |
| GED or Alternate | 936 | 7.35% |
| 1 or More Years of College | 2,483 | 19.51% |
| Associates Degree | 1,314 | 10.32% |
| Masters Degree | 622 | 4.89% |
| Professional Degree | 111 | 0.87% |
| Doctorate Degree | 131 | 1.03% |
| Coordinates | 46.23857880,-117.30500793 |
| Adjacent ZIP Codes | |
| Cities/Towns in 99403 | |
| Region | Spokane Area |
| Metropolitan/Micropolitan Stat Area | Lewiston, ID-WA |
| Time Zone | Pacific Daylight Time |
| IANA Timezone | America/Los_Angeles |
| Area | 320 Square Miles |
| US Congressional Districts in 99403 | |
| Washington State Senate Districts in 99403 | |
| Washington State House of Representatives Districts in 99403 |
| School Districts in 99403 | |
| Elementary Schools in 99403 | |
| Middle Schools in 99403 | |
| High Schools in 99403 |
| Plant Hardiness Zone | Zone 7b: 5F to 10F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | April 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | BSk - Cold Semi-Arid Climate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 10f - Dissected Loess Uplands | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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