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ZIP CODE TABULATION AREA

78642

Texas · 26,434 residents · 111.134 sq mi
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ZIP 78642 is significantly wealthier than the US average, with a median household income of $132,958. Population has held roughly steady since 2024. Median home value is $506,600. Poverty is rare here, at 3.3% of residents. Among the 17 ZIP codes in Williamson County, 78642 ranks 3rd by median household income.

$132,958
US average: $82,259
$506,600
US average: $376,019
44.5%
US average: 35.6%
Age, sex & households
Under 18
29.9%
Age 65+
11.0%
48.2%
51.8%
3.03 people
Race & ethnicity · 2024
2024
White, non-Hispanic62.1%(16,423)
Black1.6%(427)
Hispanic / Latino28.2%(7,460)
Asian4.6%(1,218)
Other3.4%(906)
Diversity Score66.4%(17,539)
Housing
Commute & vehicles
Work & employment
People & community
Affordability & inequality
Within Williamson County
Income rank vs other ZIPs
LOWEST3RD OF 17HIGHEST
Adjacent ZIPs
76527$81,574
76530$106,250
76537$98,199
Frequently asked

How many people live in ZIP code 78642?

ZIP code 78642 has about 26,434 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 78642?

The typical household in ZIP code 78642 earns about $132,958 a year. Half of households make more than that, and half make less.

Is ZIP code 78642 expensive?

In ZIP code 78642, the median home is worth about $506,600, and the typical rent is about $1,658 a month.

How educated are people in ZIP code 78642?

About 44.5% of adults age 25 and over in ZIP code 78642 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 78642?

About 3.3% of people in ZIP code 78642 live below the federal poverty line.

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