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ZIP CODE TABULATION AREA

78666

Texas · 88,583 residents · 192 sq mi
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ZIP 78666 is a ZIP code of 88,583 people in Hays County. The median age is 26.9, younger than the US median of 38.9. 38% of homes are owner-occupied. 71% were living in the same home a year earlier. That trails the Hays County median by roughly 39%. 23.8% of people in this ZIP code live below the federal poverty line. Among the 7 ZIP codes in Hays County, 78666 ranks 7th by median household income.

$54,737
US average: $82,259
$29,465
US average: $44,673
$306,700
US average: $376,019
35.7%
US average: 35.6%
Land area
192 sq mi
Age, sex & households
Under 18
14.2%
Age 65+
12.0%
47.8%
52.2%
2.36 people
Race & ethnicity · 2024
2024
White, non-Hispanic43.9%(38,900)
Black4.9%(4,308)
Hispanic / Latino44.3%(39,237)
Asian1.7%(1,543)
Other5.2%(4,595)
76
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
5.6
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within Hays County
Income rank vs other ZIPs
LOWEST7TH OF 7HIGHEST
Adjacent ZIPs
78610$119,698
78619$183,393
78620$153,477
78640$90,075
Frequently asked

How many people live in ZIP code 78666?

ZIP code 78666 has about 88,583 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 78666?

The typical household in ZIP code 78666 earns about $54,737 a year. Half of households make more than that, and half make less.

Is ZIP code 78666 expensive?

In ZIP code 78666, the median home is worth about $306,700, and the typical rent is about $1,319 a month.

How educated are people in ZIP code 78666?

About 35.7% of adults age 25 and over in ZIP code 78666 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 78666?

About 23.8% of people in ZIP code 78666 live below the federal poverty line.

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Containing area
Hays County

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