ZIP Code 78681

  • Zip Code: 78681
  • Type: Standard
  • Official USPS city name: Round Rock
  • Official USPS State Code: TX
  • Official State Name: Texas
  • ZCTA: TRUE
  • Population: 58155.0
  • Density: 1030.7
  • Primary Official County Code: 48491
  • Primary Official County Name: Williamson
  • Official County Name: Williamson
  • Official County Code: 48491
  • Imprecise: FALSE
  • Military: FALSE
  • Timezone: America/Chicago (10:10 AM Sunday, November 24 2024-11-24 (GMT -0600))
  • Geo Point: 30.53328, -97.7247


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