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ZIP Code Database - Facts & Stats

Data Last Updated: January 1, 2022

ZIP Codes for City of Round Rock, TX



Round Rock, TX Covers 6 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 78664StandardWilliamson52,932512 / 737
ZIP Code 78665StandardWilliamson35,985512 / 737
ZIP Code 78680P.O. BoxWilliamson0512 / 737
ZIP Code 78681StandardWilliamson50,606512
ZIP Code 78682UniqueWilliamson0512 / 737
ZIP Code 78683P.O. BoxWilliamson0512


Timezone(s):Central (GMT -06:00)
Counties:WILLIAMSON, TX
 
Population:99,887 (More Details)
Male Population:49,139
Female Population:50,748
Median Age:32
 
ZIP Codes:6
Cities:1
Counties:1
Area Codes:2
 
Total Area:1,134 square miles (county)
Land Area:1,118 square miles (county)
Water Area:16 square miles (county)

Round Rock, TX Demographic Information *

Total population99,887
Male population49,139
Female population50,748
Median age (years)32
White Population70,707
Black Population9,744
Indian Population678
Asian Population5,165
Hawaiian Population124
Hispanic Population28,958
Median age (Male)31.2
Median age (Female)32.6
Total households35,050
Family households (families)25,587
Average household size2.84
Average family size3.32
Total housing units37,223
* Demographic data is based on 2010 Census.


Round Rock, TX Other Information

  • Located in WILLIAMSON County, Texas
  • Round Rock, TX is also known as:
    • AUSTIN, TX
    • DELL COMPUTERS, TX
    • OLD ROUND ROCK, TX
    • THREE POINT, TX


39 Cities within 30 miles of Round Rock, TX


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References

  1. U.S. Postal Service [Last Updated: 1/1/2022], https://www.usps.com
  2. ZIP-Codes.com Internal Data Creation [Last Updated: 1/1/2022], https://www.zip-codes.com
  3. U.S. Geological Survey [Updated as needed], https://www.usgs.gov/
  4. U.S. Census [Updated Yearly], https://www.census.gov
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010], https://www.census.gov