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ZIP CODE TABULATION AREA

78640

Texas · 77,531 residents · 89.6 sq mi
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ZIP 78640 is a ZIP code of 77,531 people in Hays County. The median age is 33.4, younger than the US median of 38.9. Getting to work takes 38 minutes on average. 29% of adults hold a bachelor's degree or higher. 71% of homes are owner-occupied. There are 866 people per square mile. Among the 7 ZIP codes in Hays County, 78640 ranks 5th by median household income.

$90,075
US average: $82,259
$36,864
US average: $44,673
$330,400
US average: $376,019
29.3%
US average: 35.6%
Land area
89.6 sq mi
Age, sex & households
Under 18
26.3%
Age 65+
7.5%
51.1%
48.9%
2.81 people
Race & ethnicity · 2024
2024
White, non-Hispanic33.9%(26,267)
Black4.7%(3,675)
Hispanic / Latino56.7%(43,989)
Asian1.1%(820)
Other3.6%(2,780)
70
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
3.7
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within Hays County
Income rank vs other ZIPs
LOWEST5TH OF 7HIGHEST
Adjacent ZIPs
78610$119,698
78619$183,393
78620$153,477
78666$54,737
Frequently asked

How many people live in ZIP code 78640?

ZIP code 78640 has about 77,531 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 78640?

The typical household in ZIP code 78640 earns about $90,075 a year. Half of households make more than that, and half make less.

Is ZIP code 78640 expensive?

In ZIP code 78640, the median home is worth about $330,400, and the typical rent is about $1,730 a month.

How educated are people in ZIP code 78640?

About 29.3% of adults age 25 and over in ZIP code 78640 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 78640?

About 10.2% of people in ZIP code 78640 live below the federal poverty line.

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Containing area
Hays County

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