ZIP Code 99338 - Kennewick Washington

ZIP Code 99338 is located in Kennewick Washington. Portions of 99338 are also in Richland. 99338 is entirely within Benton County. Regionally, it is located in the Yakima-Richland-Kennewick Area.

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ZIP Code 99338 Quick Stats

ZIP Code NameKennewick
Primary CountyBenton County
ZIP Code TypeStandard
Population (2022)18,312
Area Code(s)509
Current Time

ZIP Code 99338 Map

99338 Demographics

99338 can be classified socioeconomically as 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 99338 is White. The majority race/ethnicity attending public schools in 99338 is White. The current unemployment level in 99338 is 4.6%.

Population Growth Rate8.13%
Population Density104 People per Square Mile
Total Households3,878
Percentage High Income Households6.3%
Median Household Income (2021)$118,186
Average Adjusted Gross Income (2020)$110,700
Current Unemployment Rate (April 2024)4.6%
Majority Race/EthnictyWhite - 84.94%
Public School Majority Race/EthnictyWhite - 61.53%

99338 Race/Ethnicty Breakdown

Native American550.31%
Hawaiian/Pac. Islander00%

99338 Public School Race/Ethnicty Breakdown

Native American230.37%
Hawaiian/Pac. Islander160.26%

99338 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College4606.25%
Bachelor Degree2,14729.18%
High School Diploma1,04414.19%
No High School Diploma660.9%
GED or Alternate3334.53%
1 or More Years of College1,43219.46%
Associates Degree6288.53%
Masters Degree92012.5%
Professional Degree1652.24%
Doctorate Degree1642.23%

99338 Geography

Adjacent ZIP Codes
Cities/Towns in 99338
RegionYakima-Richland-Kennewick Area
Metropolitan/Micropolitan Stat AreaKennewick-Richland, WA
Time ZonePacific Daylight Time
IANA TimezoneAmerica/Los_Angeles
Area177 Square Miles

99338 Politics

US Congressional Districts in 99338
Washington State Senate Districts in 99338
Washington State House of Representatives Districts in 99338

99338 Weather and Climate Data

Plant Hardiness ZoneZone 7a: 0F to 5F
Average First Frost DateOctober 21 - 31
Average Last Frost DateApril 1 - 10
Koppen-Geiger Climate ZoneBSk - Cold Semi-Arid Climate
Ecoregion10g - Yakima Folds

99338 Annual Climate Data

Avg Min Temp (°F)26313439465359595142342842
Avg Max Temp (°F)38465462728088877762473963
Avg Precip (In.)

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