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ZIP Code Database - Facts & Stats

Data Last Updated: January 1, 2023

ZIP Codes for City of Round Mountain, TX

Round Mountain, TX Covers 1 ZIP Code

ZIP CodeTypeCountyPopulation
ZIP Code 78663StandardBlanco746

Timezone(s):Central (GMT -06:00)
Counties:BLANCO, TX
Population:181 (More Details)
Male Population:97
Female Population:84
Median Age:50
ZIP Codes:1
Area Codes:1
Total Area:713 square miles (county)
Land Area:709 square miles (county)
Water Area:4 square miles (county)

Round Mountain, TX Demographic Information *

Total population181
Male population97
Female population84
Median age (years)50.4
White Population160
Black Population3
Indian Population2
Asian Population5
Hawaiian Population0
Hispanic Population21
Median age (Male)50.8
Median age (Female)49.8
Total households82
Family households (families)51
Average household size2.21
Average family size2.8
Total housing units109
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 1/1/2023],
  2. Internal Data Creation [Last Updated: 1/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],