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ZIP CODE TABULATION AREA

99111

Washington · 4,038 residents · 307 sq mi
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ZIP 99111 is a ZIP code of 4,038 people in Whitman County. Density works out to 13 people per square mile. 2% of people in this ZIP code were born outside the United States. That is roughly 32% ahead of the Whitman County median. The average commute runs 18 minutes. Owners hold 73% of the housing stock. Among the 20 ZIP codes in Whitman County, 99111 ranks 9th by median household income.

$73,393
US average: $82,259
$37,809
US average: $44,673
$295,800
US average: $376,019
30.5%
US average: 35.6%
Land area
307 sq mi
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)
42
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
4.0
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
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