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ZIP CODE TABULATION AREA

78731

Texas · 27,507 residents · 8.75 sq mi
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ZIP 78731 is home to 27,507 people in Travis County. This is an unusually credentialed place: 78% of adults have a four-year degree. The typical home is worth $903,200. 53% of homes are owner-occupied. There are 3,145 people per square mile. The median age is 42.3, about 3 years above the US median. Among the 46 ZIP codes in Travis County, 78731 ranks 22nd by median household income.

$105,494
US average: $82,259
$94,483
US average: $44,673
$903,200
US average: $376,019
78.3%
US average: 35.6%
Land area
8.75 sq mi
Age, sex & households
Under 18
15.9%
Age 65+
19.3%
52.5%
47.5%
1.91 people
Race & ethnicity · 2024
2024
White, non-Hispanic73.3%(20,151)
Black2.1%(586)
Hispanic / Latino13.2%(3,624)
Asian7.7%(2,109)
Other3.8%(1,037)
55
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
8.6
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within Travis County
Income rank vs other ZIPs
LOWEST22ND OF 46HIGHEST
Adjacent ZIPs
78617$71,640
78641$135,024
78645$113,008
78652$133,368
Frequently asked

How many people live in ZIP code 78731?

ZIP code 78731 has about 27,507 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 78731?

The typical household in ZIP code 78731 earns about $105,494 a year. Half of households make more than that, and half make less.

Is ZIP code 78731 expensive?

In ZIP code 78731, the median home is worth about $903,200, and the typical rent is about $1,737 a month.

How educated are people in ZIP code 78731?

About 78.3% of adults age 25 and over in ZIP code 78731 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 78731?

About 6.0% of people in ZIP code 78731 live below the federal poverty line.

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