ZIP Code 78664

  • Zip Code: 78664
  • Type: Standard
  • Official USPS city name: Round Rock
  • Official USPS State Code: TX
  • Official State Name: Texas
  • ZCTA: TRUE
  • Population: 64686.0
  • Density: 1506.6
  • Primary Official County Code: 48491
  • Primary Official County Name: Williamson
  • Official County Name: Williamson| Travis
  • Official County Code: 48491| 48453
  • Imprecise: FALSE
  • Military: FALSE
  • Timezone: America/Chicago (20:00 PM Thursday, October 31 2024-10-31 (GMT -0500))
  • Geo Point: 30.50479, -97.64577


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