Williamson County, Texas Demographics 2026

Demographic data: ACS 2020–2024 five-year estimates. Sources and methodology

Williamson County, Texas has a population of 672,688, the 12th most populous county in Texas. The median household income is $111,340 and the median home value is $447,000. The poverty rate is 6.4%.

Williamson County Quick Facts

Population 672,688

Median Household Income $111,34090% MOE ±$1,581

Median Home Value $447,00090% MOE ±$3,593

Poverty Rate 6.4%90% MOE ±0.5 pts

Unemployment Rate 3.9%90% MOE ±0.4 pts

Median Age 37.3 years90% MOE ±0.2 years

Homeownership Rate 66.4%90% MOE ±0.6 pts

Affordability Ratio 4.0x

Bachelor's Degree+ 48.4%90% MOE ±0.8 pts

Adults 25+ with high school education or higher 94.1%

Cities/Places 16

Population 672,688 12th of 254

Median Income $111,340 42% higher than state

Poverty Rate 6.4%

Unemployment 3.9%

How Williamson County Changed

Change from the non-overlapping 2015–2019 ACS period to 2020–2024. Earlier dollar figures are adjusted to 2024 dollars; changes marked “no clear change” are within the combined 90% margins of error.

Metric	2015–2019	2020–2024	Change
Population	547,604	672,688	+22.8%
Median household income	$107,486	$111,340	+3.6%
Median home value¹	$322,815	$447,000	+38.5%
Median gross rent	$1,633	$1,796	+10.0%

¹ The Census Bureau changed its home-value inflation adjustment beginning with the 2022 ACS; interpret that comparison with additional caution.

Median Household Income

Williamson

$111,340

$78,476

National

$80,734

Median Home Value

Williamson

$447,000

$283,800

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 7.2%

$25K-$50K 10.3%

$50K-$100K 26.8%

$100K+ 55.7%

Detailed income brackets

Under $10K

2.8%

$10K-$15K

1.5%

$15K-$20K

1.2%

$20K-$25K

1.7%

$25K-$30K

1.6%

$30K-$35K

2.1%

$35K-$40K

1.9%

$40K-$45K

2.5%

$45K-$50K

2.2%

$50K-$60K

5.8%

$60K-$75K

8.6%

$75K-$100K

12.3%

$100K-$125K

11.4%

$125K-$150K

9.5%

$150K-$200K

14.8%

$200K+

20.0%

Employment

3.9% Unemployment Rate State: 5.3%|National: 5.2%

70.7% Labor Force Participation

Housing Overview

Owner 66.4%

Renter 33.6%

Affordability Index Moderate

4.0x home value to income ratio

Median gross rent $1,796/mo 19.4% of median household income annually

People & Demographics

Age Distribution

Under 18

24.1%

18-34

22.3%

35-54

30.5%

55-74

18.0%

75+

5.2%

Race & Ethnicity

Diversity Index

High Diversity

A diverse community with significant representation from multiple racial and ethnic groups.

State average: 67 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Williamson County

City	Population	Median Income	Poverty	Home Value
Georgetown	85,999	$95,062	8.0%	$429,100
Hutto	35,483	$118,834	5.7%	$365,700
Brushy Creek	19,576	$138,589	5.5%	$499,300
Taylor	17,136	$75,508	7.7%	$285,800
Sonterra	10,563	$92,319	10.4%	$273,600
Liberty Hill	8,371	$115,096	7.2%	$403,200
Santa Rita Ranch	6,586	$160,592	0.9%	$515,700
Jarrell	3,295	$111,333	2.2%	$346,300
Bartlett	1,941	$67,438	14.3%	$218,900
Serenada	1,444	$154,653	1.5%	$480,100
Thorndale	1,113	$64,013	9.9%	$183,900
Florence	1,061	$78,750	14.7%	$239,100
Granger	1,046	$73,145	11.2%	$185,100
Thrall	861	$76,094	10.4%	$175,000
Coupland	491	N/A	9.6%	$230,900
Weir	434	N/A	15.5%	N/A

Explore Texas Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Williamson County is located in Texas with a total population of 672,688. It is the 12th most populous county out of 254 in Texas. The county encompasses 16 Census-designated places.

Age Demographics

The median age in Williamson County is 37.3 years. This is 5% higher than the state median of 35.6 years.

Economy, Income & Housing

The median household income in Williamson County is $111,340. This is 42% higher than the state median of $78,476. It is also 38% higher than the national median of $80,734. The poverty rate stands at 6.4%. This is 53% lower than the state poverty rate of 13.8%. The unemployment rate is 3.9%. This is 26% lower than the state rate of 5.3%. The median home value is $447,000. Housing costs are 58% higher than the state median of $283,800. The home-value-to-income ratio is 4.0x. 66.4% of occupied housing units are owner-occupied. This homeownership rate is 6% higher than the state average of 62.6%.

Race & Ethnicity

The largest racial or ethnic group in Williamson County is White (non-Hispanic), making up 53.3% of the population. Hispanic or Latino residents account for 24.7%. The Asian population is significantly higher than the state average (9.9% vs 5.5%).

Education

48.4% of residents aged 25 and older hold a bachelor's degree or higher. This places Williamson County in the top 10% of all counties in the state for educational attainment. This is 43% higher than the state rate of 33.8%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.1%. Notably, 17.8% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All figures for Williamson County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Texas and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Williamson County, Texas?

Williamson County has a population of 672,688, making it the 12th most populous county in Texas.

What is the median income in Williamson County?

The median household income in Williamson County is $111,340 with a poverty rate of 6.4%.

How many cities are in Williamson County, Texas?

Williamson County contains 16 Census-designated places.