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ZIP CODE TABULATION AREA

99143

Washington · 585 residents · 331.33 sq mi
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ZIP 99143 has notably lower household income than the US average, with a median household income of $38,214. Population has held roughly steady since 2024. Median home value is $123,600. With a median age of 59.0, the population is older than the US median of 38.9. Households here earn about 31% less than the Whitman County median. Among the 20 ZIP codes in Whitman County, 99143 ranks 19th by median household income.

$38,214
US average: $82,259
$123,600
US average: $376,019
35.3%
US average: 35.6%
Age, sex & households
Under 18
19.0%
Age 65+
34.2%
51.5%
48.5%
2.12 people
Race & ethnicity · 2024
2024
White, non-Hispanic69.6%(407)
Black3.6%(21)
Hispanic / Latino10.4%(61)
Asian0.5%(3)
Other15.9%(93)
Diversity Score59.8%(350)
Housing
Commute & vehicles
Work & employment
People & community
Affordability & inequality
Within Whitman County
Income rank vs other ZIPs
LOWEST19TH 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 99143?

ZIP code 99143 has about 585 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 99143?

The typical household in ZIP code 99143 earns about $38,214 a year. Half of households make more than that, and half make less.

Is ZIP code 99143 expensive?

In ZIP code 99143, the median home is worth about $123,600, and the typical rent is about $658 a month.

How educated are people in ZIP code 99143?

About 35.3% of adults age 25 and over in ZIP code 99143 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 99143?

About 12.4% of people in ZIP code 99143 live below the federal poverty line.

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