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ZIP CODE TABULATION AREA

99163

Washington · 34,022 residents · 211 sq mi
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ZIP 99163 is home to 34,022 people in Whitman County. This skews young, with a median age of 23.4. 35% of homes are owner-occupied. This is an unusually credentialed place: 61% of adults have a four-year degree. People stay put here: 67% were in the same home a year ago. The poverty rate is 28.6%, above the 12.5% national rate. Among the 20 ZIP codes in Whitman County, 99163 ranks 18th by median household income.

$48,231
US average: $82,259
$33,262
US average: $44,673
$435,900
US average: $376,019
61.3%
US average: 35.6%
Land area
211 sq mi
Age, sex & households
Under 18
12.8%
Age 65+
7.9%
51.0%
49.0%
2.11 people
Race & ethnicity · 2024
2024
White, non-Hispanic69.4%(23,622)
Black1.5%(511)
Hispanic / Latino8.7%(2,970)
Asian9.1%(3,086)
Other11.3%(3,833)
61
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
9.0
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within Whitman County
Income rank vs other ZIPs
LOWEST18TH OF 20HIGHEST
Adjacent ZIPs
99017$58,958
99033$58,750
99102$56,833
99111$73,393
Frequently asked

How many people live in ZIP code 99163?

ZIP code 99163 has about 34,022 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 99163?

The typical household in ZIP code 99163 earns about $48,231 a year. Half of households make more than that, and half make less.

Is ZIP code 99163 expensive?

In ZIP code 99163, the median home is worth about $435,900, and the typical rent is about $1,062 a month.

How educated are people in ZIP code 99163?

About 61.3% of adults age 25 and over in ZIP code 99163 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 99163?

About 28.6% of people in ZIP code 99163 live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR · ZCTA · UPDATED 2024