Williamson County, TN demographics:
population, income, and more

Total population
260,351
2.3% year-over-year change
Median household income
$135,594/yr
3.4% year-over-year change
Housing units
96,921
2.6% year-over-year change

Williamson County population

How many people live in Williamson County

Williamson County is home to 260,351 residents, according to the most recent Census data. Gender-wise, 49.5% of Williamson County locals are male, and 50.5% are female.

Total population
260,351
2.3% year-over-year change
Gender ratio
Male
49.5%
128,815
Female
50.5%
131,536
Value Percent YoY change
Male 128,815 49.5% 2.5%
Female 131,536 50.5% 2.1%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Williamson County is 40, with the population distributed as follows: about 20.5% are children under 15, then 13.4% are in the 15 to 24 age group. Adults between 25 and 44 make up 23.4% of the population, while another 27.9% fall into the 45 to 64 bracket. Finally, around 14.8% are 65 or older.

Median age
40.4
Age breakdown
Under 15
20.5%
15 to 24
13.4%
25 to 44
23.4%
45 to 64
27.9%
Over 65
14.8%
Value Percent YoY change
Under 15 53,451 20.5% 0.2%
15 to 24 34,797 13.4% 3.4%
25 to 44 60,956 23.4% 1.4%
45 to 64 72,743 27.9% 2.1%
Over 65 38,404 14.8% 5.8%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Williamson County, 90.2% of the population are US-born citizens, while 5.1% have gained naturalized citizenship. At the same time, 4.7% of residents are non-citizens. As for race, 81.9% of locals are Caucasian, 3.9% are African American and 5.4% have Asian roots. There’s also a share of 6.9% that includes residents with two or more races.

Citizenship
U.S.-born citizens
90.2%
Non-U.S.-born citizens
5.1%
Non-citizens
4.7%
Value Percent YoY change
U.S.-born citizens 234,819 90.2% 1.8%
Non-U.S.-born citizens 13,230 5.1% 4.2%
Non-citizens 12,302 4.7% 9.2%
Racial breakdown
White
81.9%
Black or African American
3.9%
American Indian and Alaska Native
0.2%
Asian
5.4%
Native Hawaiian and other Pacific Islander
0%
Two or more races
6.9%
Other
1.6%
Value Percent
White 213,322 81.9%
Black or African American 10,189 3.9%
American Indian and Alaska Native 595 0.2%
Asian 13,977 5.4%
Native Hawaiian and other Pacific Islander 75 0%
Two or more races 18,028 6.9%
Other 4,165 1.6%

Households in Williamson County

A peek inside Williamson County households

Williamson County has 92,214 households, with an average of 3 members in each. Of these, 76.9% are families, while the remaining 23.1% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
92,214
1.6% year-over-year change
Average people per household
3
Non-family households
21,264
Family households
70,950
Value Percent YoY change
Non-family households 21,264 23.1% 5.0%
Family households 70,950 76.9% 0.7%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Williamson County

The housing landscape of Williamson County

Williamson County's housing consists of 96,921 units, with 77.6% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 5.5% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 1.5% of the housing landscape.

Housing units
96,921
2.6% year-over-year change
Housing types
Value Percent
1 unit, detached 75,214 77.6%
1 unit, attached 5,294 5.5%
2 units 650 0.7%
3 or 4 units 1,481 1.5%
5 to 9 units 2,981 3.1%
10 to 19 units 2,387 2.5%
20 to 49 units 3,093 3.2%
50 or more units 4,281 4.4%
Mobile home 1,457 1.5%
Boat, RV, van, etc. 83 0.1%
Homes built since 2020
4,655
71.5% year-over-year change

The age of buildings in Williamson County

In Williamson County, the median construction year is 2002. About 2.2% of homes were built before the 1940s, with another 0.6% going up by 1949. Most development happened in the second half of the 20th century. Then, 22% of homes were added from 2000 to 2009, 26.5% between 2010 and 2019, and 4.8% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 2,184 2.2% 12.2%
Built between 1940 and 1949 547 0.6% -9.0%
Built between 1950 and 1959 1,581 1.6% 7.0%
Built between 1960 and 1969 3,181 3.3% -5.5%
Built between 1970 and 1979 8,428 8.7% -5.1%
Built between 1980 and 1989 10,360 10.7% -2.0%
Built between 1990 and 1999 18,938 19.5% 4.2%
Built between 2000 and 2009 21,358 22% -1.4%
Built between 2010 and 2019 25,689 26.5% 2.7%
Built in 2020 or later 4,655 4.8% 71.5%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Williamson County occupancy rates

Out of the 92,214 occupied housing units in Williamson County, 78.8% are owner-occupied, while 21.2% are lived in by tenants. Meanwhile, 4.9% of all homes on the local market sit vacant.

Occupied housing units
92,214
1.6% year-over-year change
Occupancy breakdown
Renter occupied
19,543
Owner occupied
72,671
Value Percent YoY
change
Renter occupied 19,543 21.2% 6.5%
Owner occupied 72,671 78.8% 0.4%
Unoccupied housing units
4.9%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Williamson County housing costs

Housing costs in Williamson County come to a median of $2,019 per month, while tenants specifically pay a median gross rent of $1,969.

Median housing costs per month
$2,019/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Williamson County
$1,969/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Williamson County

Williamson County education at a glance

About 17.8% of the population in Williamson County went to high school, while 15.6% pursued college studies. Another 6.3% earned an associate degree and 36.9% hold a bachelor’s. Meanwhile, 21.5% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 3,682 1.9% 0.8%
High school diploma 34,374 17.8% 2.0%
College diploma 30,092 15.6% 0.9%
Associate degree 12,166 6.3% 1.1%
Bachelor's degree 71,328 36.9% 3.6%
Graduate degree 41,506 21.5% 4.5%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Williamson County

How much people earn in Williamson County

The average annual household income in Williamson County was $183,026 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +3% change from the previous year. At the same time, the median income stood at $135,594, reflecting a +3.4% shift over the same period.

Average household income in Williamson County
$183,026/year
3.0% year-over-year change
Median household income in Williamson County
$135,594/year
3.4% year-over-year change

Williamson County income by age

In Williamson County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $137,331. Those with someone between 45 and 64 in charge, often well established professionally, earn $167,544 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $52,412, while those led by someone over 65, many of whom may be retired, have about $91,408 in earnings. Overall, 95.3% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $52,412 3.0%
25 - 44 $137,331 2.3%
45 - 64 $167,544 4.9%
Over 65 $91,408 9.4%
Above poverty level
244,562
Below poverty level
11,995
Value Percent YoY
change
Above poverty level 244,562 95.3% 2.2%
Below poverty level 11,995 4.7% 5.7%

Employment in Williamson County

Workforce and job types in Williamson County

The job market in Williamson County is powered by 131,150 working residents, spread across a range of industries and roles. 90.8% of the working population are employed in professional or administrative positions, while 9.2% are in hands-on or service-based jobs. Also, 14.5% run their own businesses, 67% are employed by private companies, and 10.2% work in the public sector.

Workforce demographics

Working population
131,150
1.4% year-over-year change
White collar
119,091
Blue collar
12,059
Value Percent YoY change
White collar 119,091 90.8% 0.9%
Blue collar 12,059 9.2% 6.0%
Employer type
Self employees
14.5%
Private companies
67%
Governmental workers
10.2%
Not for profit companies
8.2%
Value Percent YoY change
Self employees 19,057 14.5% 0.3%
Private companies 87,838 67% 1.3%
Governmental workers 13,442 10.2% 2.3%
Not for profit companies 10,813 8.2% 2.5%
Unemployment rate
2.4%
23.4% year-over-year change

Available workforce

The unemployment rate in Williamson County stands at 2.4%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Williamson County

How people get around in Williamson County

Commuting methods vary: 70% of residents travel by personal vehicle and 0.5% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 91,017 70% -1.4%
Taxicab 81 0.1% -35.7%
Bus or trolleybus 78 0.1% 21.9%
Motorcycle 7 0% 0.0%
Bicycle 60 0% 25.0%
Walk 702 0.5% -25.9%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Williamson County by zipcode?

Zipcode Population Number of households Median income Average income
37046 7,310 2,589 $178,228 $253,740
37062 13,851 5,025 $91,750 $115,534
37064 67,513 24,359 $127,771 $170,353
37067 31,556 13,405 $111,759 $143,005
37069 20,209 7,125 $157,939 $226,463
37135 24,409 7,827 $148,819 $176,354
37174 53,900 19,512 $105,181 $129,385
37179 18,043 5,918 $136,188 $176,483
37014 3,227 1,250 $105,125 $199,164
37027 61,630 22,535 $154,578 $229,514

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FAQs about Williamson County demographics 

What is the total population of Williamson County?

Williamson County has a total population of 260,351 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +2.3% compared to a year ago.

What is the gender ratio in Williamson County?

The gender ratio in Williamson County is as follows:
  • 49.5% males (128,815 residents)
  • 50.5% females (131,536 residents)

What is the median age in Williamson County?

The median age in Williamson County is 40.4.

What is the age distribution of the population in Williamson County?

The age distribution in Williamson County is as follows:
  • Under 15: 20.5% (53,451 residents)
  • Ages 15-24: 13.4% (34,797 residents)
  • Ages 25-44: 23.4% (60,956 residents)
  • Ages 45-64: 27.9% (72,743 residents)
  • Over 65: 14.8% (38,404 residents)

What is the racial and ethnic makeup of Williamson County?

The racial and ethnic makeup of Williamson County is as follows:
  • White: 81.9% (213,322 residents)
  • Black or African American: 3.9% (10,189 residents)
  • American Indian and Alaska Native: 0.2% (595 residents)
  • Asian: 5.4% (13,977 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (75 residents)
  • Two or More Races: 6.9% (18,028 residents)
  • Other: 1.6% (4,165 residents)

What percentage of the population in Williamson County are U.S.-born citizens?

U.S.-born citizens represent 90.2% of the population in Williamson County.

How many housing units are there in Williamson County?

There are 96,921 housing units in Williamson County, reflecting a +2.6% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Williamson County and what is the average household size?

Williamson County has a total of 92,214 households, with an average of 3 people in each.

What is the median household income in Williamson County?

Williamson County has a median household income of $135,594, representing a +3.4% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Williamson County?

The employment rate is 97.6% in Williamson County, with a workforce of 131,150 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 90.8% (119,091 residents)
  • Blue-collar workers: 9.2% (12,059 residents)

Places of employment:
  • Self-employed: 14.5% (19,057 residents)
  • Private companies: 67% (87,838 residents)
  • Governmental workers: 10.2% (13,442 residents)
  • Not-for-profit companies: 8.2% (10,813 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025