Williamson County, Texas

18 cities & places have their primary county here.

Population: 643,889
Median household income: $108,309
Median home value: $414,600

Williamson County, Texas counts 643,889 residents. 18 cities and places have their primary county here. Its median household income of $108,309 runs above the Texas figure of $76,292.

Between 2019 and 2023, Williamson County's population grew 17.6% from 547,604 to 643,889, while its median household income rose 24.0% from $87,337 to $108,309.

The largest age group is 5 to 17, 18.4% of residents. White (non-Hispanic) residents are the largest group, 55.1% of the population.

Demographics

ACS 2019–2023

Population: 643,889
Median age: 37.2 yrs
Median household income: $108,309
Median home value: $414,600
Median gross rent: $1,720
Housing units: 251,600
Homeownership rate: 67.1%
Bachelor's degree or higher: 47.4%
Unemployment rate: 4.0%

Trends

ACS 5-year · 2019–2023

Population

547,604643,889

Median household income

$87,337$108,309

Median home value

$262,300$414,600

Median gross rent

$1,327$1,720

Year	Population	Median household income	Median home value	Median gross rent
2019	547,604	$87,337	$262,300	$1,327
2020	570,437	$90,834	$282,700	$1,368
2021	591,759	$94,705	$308,400	$1,426
2022	617,396	$102,851	$370,100	$1,597
2023	643,889	$108,309	$414,600	$1,720

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 56.1%

5 to 1718.4%

18 to 247.8%

25 to 3414.2%

35 to 4416.9%

45 to 5413.5%

55 to 6410.4%

65 to 747.8%

75 and over5.0%

	Count	Share
Under 5	39,013	6.1%
5 to 17	118,586	18.4%
18 to 24	50,421	7.8%
25 to 34	91,256	14.2%
35 to 44	108,539	16.9%
45 to 54	87,139	13.5%
55 to 64	66,672	10.4%
65 to 74	50,107	7.8%
75 and over	32,156	5.0%

Race & ethnicity

	Count	Share
White (non-Hispanic)	354,615	55.1%
Black or African American	42,712	6.6%
American Indian & Alaska Native	727	0.1%
Asian	57,181	8.9%
Native Hawaiian & Pacific Islander	686	0.1%
Some other race	3,510	0.5%
Two or more races	26,478	4.1%
Hispanic or Latino (any race)	157,980	24.5%

Educational attainment (age 25+)

No high school diploma5.8%

High school graduate17.7%

Some college or associate's29.0%

Bachelor's degree30.5%

Graduate or professional degree16.9%

	Count	Share
No high school diploma	25,456	5.8%
High school graduate	77,360	17.7%
Some college or associate's	126,441	29.0%
Bachelor's degree	132,922	30.5%
Graduate or professional degree	73,690	16.9%

Commute to work

Mean travel time to work: 28 min

Drove alone66.0%

Carpooled7.6%

Public transit0.4%

Walked1.0%

Bicycle0.2%

Worked from home23.3%

Other means1.6%

How workers get to work

	Count	Share
Drove alone	223,098	66.0%
Carpooled	25,615	7.6%
Public transit	1,198	0.4%
Walked	3,537	1.0%
Bicycle	523	0.2%
Worked from home	78,570	23.3%
Other means	5,268	1.6%

Travel time

	Count	Share
Under 15 min	53,959	20.8%
15 to 29 min	91,236	35.2%
30 to 44 min	64,855	25.0%
45 to 59 min	29,307	11.3%
60+ min	19,882	7.7%

Households

Average household size: 2.65
Poverty rate: 6.3% (40,507 of 639,040)

	Count	Share
Family households	169,435	70.1%
Nonfamily households	72,319	29.9%

Housing

Median year structure built: 2005

Occupancy

	Count	Share
Occupied	241,754	96.1%
Vacant	9,846	3.9%

Tenure (of occupied units)

	Count	Share
Owner-occupied	162,175	67.1%
Renter-occupied	79,579	32.9%

1-unit, detached72.8%

1-unit, attached2.6%

2 to 4 units3.9%

5 to 19 units8.4%

20 or more units10.1%

Mobile home & other2.2%

Units in structure

	Count	Share
1-unit, detached	183,198	72.8%
1-unit, attached	6,494	2.6%
2 to 4 units	9,783	3.9%
5 to 19 units	21,021	8.4%
20 or more units	25,499	10.1%
Mobile home & other	5,605	2.2%

Geography

County GEOID: 48491
State: Texas
Land area: 1,116 sq mi
Water area: 16 sq mi
Center point: 30.6491, -97.6051

Cities & places

Compare with nearby counties

Other counties in Texas

253