78665   Zip Code Round Rock Williamson TX United States

City Round Rock
County Williamson
State Texas
Latitude 30.55038
Longitude -97.63681
Population 66,171
Density 2748.96 people per square mile
Time Zone America/Chicago
  • All demographic data comes from the 2024 American Community Survey (5-year study).
  • Learn more about each field.
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Household Income

Median household: $122,680
Median individual: $57,649

Race

Mode: 49.1% White

Gender

 50.3% male 

Rent

  $1938 / month  

Median house value: $473,479.0

Age

Median: 35.5 years old

Education

With at least college degree: 53.5%
With STEM degree: 49.5%

Marital Status

 55.6% married 

Never married: 30.2%

Labor Force Participation

 73.2% working 

Unemployed: 3.4%

Average Family Size

 3.20 people 

Commute Time

 27.8 minutes 

Health Care

 6.7% uninsured 

Poverty

 4.7%

All data comes from the SimpleMaps US Zips Comprehensive Database, February 2026.

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