CensusEasy
ZIP CODE TABULATION AREA

99111

Washington · 4,038 residents · 306.992 sq mi
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ZIP 99111 has lower-than-average household income, with a median household income of $73,393. Population has held roughly steady since 2024. Median home value is $295,800. Households here earn about 32% more than the Whitman County median. Among the 20 ZIP codes in Whitman County, 99111 ranks 9th by median household income.

$73,393
US average: $82,259
$295,800
US average: $376,019
30.5%
US average: 35.6%
Age, sex & households
Under 18
23.5%
Age 65+
19.7%
47.5%
52.5%
2.32 people
Race & ethnicity · 2024
2024
White, non-Hispanic80.6%(3,256)
Black1.7%(69)
Hispanic / Latino10.7%(432)
Asian0.8%(34)
Other6.1%(247)
Diversity Score41.8%(1,687)
Housing
Commute & vehicles
Work & employment
People & community
Affordability & inequality
Within Whitman County
Income rank vs other ZIPs
LOWEST9TH OF 20HIGHEST
Adjacent ZIPs
99017$58,958
99033$58,750
99102$56,833
99113$104,643
Frequently asked

How many people live in ZIP code 99111?

ZIP code 99111 has about 4,038 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 99111?

The typical household in ZIP code 99111 earns about $73,393 a year. Half of households make more than that, and half make less.

Is ZIP code 99111 expensive?

In ZIP code 99111, the median home is worth about $295,800, and the typical rent is about $953 a month.

How educated are people in ZIP code 99111?

About 30.5% of adults age 25 and over in ZIP code 99111 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 99111?

About 10.1% of people in ZIP code 99111 live below the federal poverty line.

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