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ZIP CODE TABULATION AREA

99163

Washington · 34,022 residents · 210.712 sq mi
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ZIP 99163 has notably lower household income than the US average, with a median household income of $48,231. Population has held roughly steady since 2024. 61% of adults hold a bachelor's degree or higher, well above the national rate of 36%. Median home value is $435,900. At a median age of 23.4, residents skew younger than the country as a whole. 61% of adults hold a bachelor's degree, well above the US average, yet household income trails the national figure — a profile common to graduate-student tracts and academic hubs. Among the 20 ZIP codes in Whitman County, 99163 ranks 18th by median household income.

$48,231
US average: $82,259
$435,900
US average: $376,019
61.3%
US average: 35.6%
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)
Diversity Score61.1%(20,803)
Housing
Commute & vehicles
Work & employment
People & community
Affordability & inequality
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