Williamson County TX Information


Williamson County Subdivisions

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  1. Williamson County 2018 Demographic Data
  2. Growth Rates forWilliamson County (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

Williamson County TX Data & Demographics (As of July 1, 2018)


Total Population 556,139
Population in Households 550,319
Population in Familes 471,701
Population in Group Qrtrs 5,820
Population Density2 497
Diversity Index3 69


Median Household Income $78,794
Average Household Income $97,833
Per Capita Income $35,640


Total Housing Units 209,372 (100%)
Owner Occupied HU 143,934 (68.7%)
Renter Occupied HU 57,020 (27.2%)
Vacant Housing Units 8,418 ( 4.0%)
Median Home Value $231,568
Average Home Value $270,307


Total Households 200,954
Average Household Size 2.74
Family Households 146,111
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 3.38% 3.3%
Households 3.39% 3.32%
Families 3.33% 3.3%
Median Household Income   1.52%
Per Capita Income   2.16%


Williamson County TX - Peer Comparisons by Rank and Percentile

The table below compares Williamson County to the other 254 counties and county equivalents 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 # 12 96th
Population Density # 14 95th
Diversity Index # 63 76th
Median Household Income # 6 98th
Per Capita Income # 12 96th

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

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Texas Census Data Comparison Tool

Compare Texas July 1, 2018 Data
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