ZIP Code 78663

  • Zip Code: 78663
  • Type: Standard
  • Official USPS city name: Round Mountain
  • Official USPS State Code: TX
  • Official State Name: Texas
  • ZCTA: TRUE
  • Population: 873.0
  • Density: 2.7
  • Primary Official County Code: 48031
  • Primary Official County Name: Blanco
  • Official County Name: Blanco| Travis| Hays
  • Official County Code: 48031| 48453| 48209
  • Imprecise: FALSE
  • Military: FALSE
  • Timezone: America/Chicago (10:07 AM Wednesday, July 09 2025-07-09 (GMT -0500))
  • Geo Point: 30.42067, -98.33532


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