Williamson County Population

1840–2026

67,376

2026 projection

0.4% since 2020 (increase)

010K20K30K40K50K60K70K1840186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Williamson County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202667,376+1510.22%
202567,225+1510.23%
202467,074+3250.49%
202366,749+2050.31%
202266,544-3660.55%
202166,910-2170.32%
202067,127+4940.74%
201966,633-3840.57%
201867,017-590.09%
201767,076-4280.63%

Showing 10 of 33 years.

Williamson County Demographics

41.6median age

Median age

Female42.4 yrs
Male40.9 yrs

Adults

52,649
13,136 seniors (65+) · 25% of adults39,513 other adults

Sex

Female 49.8% · 33,291Male 50.2% · 33,585

Population by age

MaleFemale85+ years, male: 41085+ years, female: 93980–84 years, male: 74780–84 years, female: 1,09375–79 years, male: 1,18275–79 years, female: 1,17870–74 years, male: 1,44870–74 years, female: 1,96965–69 years, male: 2,15465–69 years, female: 2,01660–64 years, male: 2,56960–64 years, female: 2,21455–59 years, male: 2,00455–59 years, female: 2,38550–54 years, male: 2,26950–54 years, female: 2,07945–49 years, male: 2,01945–49 years, female: 1,90840–44 years, male: 2,37940–44 years, female: 1,91035–39 years, male: 2,49135–39 years, female: 2,43530–34 years, male: 2,16330–34 years, female: 2,18825–29 years, male: 2,11025–29 years, female: 2,02820–24 years, male: 1,66220–24 years, female: 1,52715–19 years, male: 1,93715–19 years, female: 1,73810–14 years, male: 2,30910–14 years, female: 2,0025–9 years, male: 1,9475–9 years, female: 1,9750–4 years, male: 1,7850–4 years, female: 1,70785+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–41K1K2K2K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 669 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Williamson County Income

$65,604median household income

Median household income

$65,604

Half of households earn more, half earn less

Median earnings

$47,386

Typical yearly pay for a worker 25 or older.

Poverty rate

13.8%

About 1 in 7 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Williamson County Marital Status

51% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married51%52%50%
Never married27%32%23%
Divorced14%12%16%
Widowed6%3%10%
Separated1%1%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year