Williamson County, TX Population

Overview

591,759

Total Population

36.7

Median age

50.42%

Female population %

98.3:100

Gender ratio (M:F)

35-39 years

Largest age group

49.6

Total dependency ratio

White

Largest racial group

147,749

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Williamson County's population is young compared to the rest of the country:

The median age in Williamson County is 36.7, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Williamson County's population under 18 was 25.39%, compared to the 22.51% nationwide.
Williamson County's elderly or the senior population (over 65 age) was 12.20% as compared to 16.04% nationwide.
Of the total population in Williamson County, 20.96% were under the age of 15, 18.54% aged 15 to 29, 48.30% aged 30 to 64, 11.04% aged 65 to 84, and 1.16% were 85 years of age and older.

There are 4,945 more females than males in Williamson County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.42% females and 49.58% males in Williamson County, TX.
The Williamson County, TX gender ratio is 98.3:100 i.e. 98.3 men to 100 women (0.983).
For male population, the largest age group is 35-39 years with a population of 24,562.
For the female population, the largest age group is 35-39 years with a population of 25,300.

Williamson County's population has become increasingly diverse:

Racial distribution of Williamson County population: 71.86% are White, 6.54% are Black or African American, 0.38% are American Indian and Alaska Native, 7.51% are Asian, 0.11% are Native Hawaiian and other Pacific Islander, 3.57% are some other race and 10.03% are multiracial.
Williamson County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 147,749 is Hispanic or Latino (of any race), and 444,01 (75.03% of the total population) is Non-Hispanic.
The largest racial group in Williamson County is White with a population of 425,221 (71.86% of the total population).

Williamson County's population has not reached its peak yet and is showing a trend of further growth:

The peak population was 671,418 in the year 2022
From 2000 to 2010, Williamson County's population increased by 171,141 (67.00%), as compared to the national growth of 9.63%.
From 2010 to 2020, Williamson County's population increased by 188,949 (44.30%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Williamson County's population was lowest in year 2000 at 255,427.