Round Mountain, TX 78663 ZIP Code Profile

Related Place Profiles:
Cypress Mill, TX | Round Mountain, TX

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ZIP Code 78663: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Round Mountain, TX 78663

Acceptable Alternative
Cypress Mill, TX 78663
Round Mtn, TX 78663

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 34
  • Single Family Addresses: 308
  • Multi-Family Addresses: 0
  • County: Blanco County
  • Centroid: Latitude 30.442, Longitude -98.468
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 78663 has segments in 3 Counties (Blanco, Hays, Travis).

Neighborhood Data

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78663 ZIP Code Map

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Round Mountain, TX 78663 Data & Demographics (As of July 1, 2016)


Total Population 792
Population in Households 792
Population in Familes 663
Population in Group Qrtrs 0
Population Density1 5
Diversity Index2 29


Total Households 349
Average Household Size 2.27
Family Households 250
Average Family Size 3


Total Housing Units 497 (100%)
Owner Occupied HU 293 (59.0%)
Renter Occupied HU 56 (11.3%)
Vacant Housing Units 148 (29.8%)
Median Home Value $238,125
Average Home Value $373,720


Median Household Income $72,342
Average Household Income $96,198
Per Capita Income $42,390
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.16% 0.08%
Households 0.18% 0.11%
Families 0.13% 0.08%
Median Household Income   1.41%
Per Capita Income   1.31%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Round Mountain, TX 78663 - Peer Comparisons by Rank and Percentile

The table below compares 78663 to the other 1,873 ZIP Codes in Texas by rank and percentile using July 1, 2016 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 1508 20th
Population Density1 # 1635 13th
Diversity Index2 # 1701 9th
Median Household Income # 227 88th
Per Capita Income # 135 93rd

Additional comparisons and rankings can be made with a VERY EASY TO USE Texas Census Data Comparison Tool.

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