Round Rock, TX 78681 ZIP Code Profile

Related Place Profiles:
Round Rock, TX

ZIP Code 78681: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Round Rock, TX 78681

Acceptable Alternative
Austin, TX 78681

  • ZIP Code Type: STANDARD
  • County: Williamson County
  • Centroid: Latitude 30.513, Longitude -97.712
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes
  • Businesses Addresses: 1,100
  • PO Box Addresses: 0
  • Residential Addresses: 19,526
    • Multi-Family Addresses: 2,680
    • Single Family Addresses: 16,846

The ZIP Code maps and database are updated 4 times per year.
Database updated: August 1, 2018, Maps updated: August 1, 2018.

Jump to... (On This Page!)
  1. 78681 2018 Demographic Data
  2. Growth Rates for 78681 (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Texas Research Tools (Easy Tools & Current Data)
  3. Texas Data Comparison Tool - 2018 Demographics

Research a Texas Address and get...

Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Round Rock, TX 78681 Data & Demographics (As of July 1, 2018)


Total Population 56,379
Population in Households 56,285
Population in Familes 50,181
Population in Group Qrtrs 94
Population Density2 2,276
Diversity Index3 67


Median Household Income $100,103
Average Household Income $116,800
Per Capita Income $39,848


Total Housing Units 19,760 (100%)
Owner Occupied HU 15,028 (76.1%)
Renter Occupied HU 4,174 (21.1%)
Vacant Housing Units 558 ( 2.8%)
Median Home Value $264,668
Average Home Value $291,434


Total Households 19,202
Average Household Size 2.93
Family Households 15,001
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2018 2018-2023
Population 1.66% 2.36%
Households 1.64% 2.37%
Families 1.51% 2.29%
Median Household Income   0.68%
Per Capita Income   1.83%

Round Rock, TX 78681 - Peer Comparisons by Rank and Percentile

The table below compares 78681 to the other 1,862 ZIP Codes in Texas by rank and percentile using July 1, 2018 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 # 85 95th
Population Density # 391 79th
Diversity Index # 585 69th
Median Household Income # 81 96th
Per Capita Income # 219 88th

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

Quick & Easy Ways to...

  1. Get Current Demographic Data for Cities, Towns, and ZIP Codes
  2. View Boundary Maps, for Cities, Towns, and ZIP Codes
  3. Locate Physical, Cultural, and Historical Features
  4. Research Public Schools & Attendance Zones

Texas Census Data Comparison Tool

Compare Texas July 1, 2018 Data
Highest or Lowest: