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COUNTY · 2000 CENSUS

Williamson County

Tennessee · 126,638 residents · 582.865 sq mi
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The short version

Williamson County is significantly wealthier than the US average, with a median household income of $69,104. The county has grown rapidly, with population up 56% since 1990. 44% of adults hold a bachelor's degree or higher, well above the national rate of 24%. Median home value has risen by half since 1990, reaching $204,700. Poverty is rare here, at 4.7% of residents. Households here earn about 90% more than the Tennessee median.

At a glance
Wealthier
above the US median
US median: $42,589
Mid-age
median age 36.2
US median: 35.2
More educated
44% hold a bachelor's degree
US average: 24%
Stable housing
home values roughly flat, inflation adjusted
US median home: $120,530
Section 01

Population & growth

126,638
+56%since 1990
from 81,021 in 1990
1990 – 2025
217 / sq mi
+56%since 1990
from 139 / sq mi in 1990
US average: 242
36.2
+6%since 1990
from 34.1 in 1990
US average: 35.2
Population, 19902024
63K117K171K224K278K1990201020202024Williamson County
2024260K
1990201020202024
Section 02

Income & economy

$69,104
+20%inflation adjusted, since 1990
from $43,615 in 1990
US average: $42,589
1990 – 2024
$32,496
+68%since 1990
from $19,339 in 1990
US average: $21,522
4.7%
−1.0 ptssince 1990
from 5.8% in 1990
US average: 12.4%
Section 03

Housing

$204,700
+19%inflation adjusted, since 1990
from $130,900 in 1990
US average: $120,530
1990 – 2024
$744
+18%inflation adjusted, since 1990
from $480 in 1990
US average: $602
81.5%
+2.0 ptssince 1990
from 79.5% in 1990
18.5% rent
3.0
−1%since 1990
from 3.0 in 1990
1990 – 2024
RELATED:See current rent listings in Williamson County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic92.3%(74,748)
Black6.7%(5,445)
Hispanic / Latino0.5%(440)
Asian0.6%(498)
Diversity Score19.2%(15,543)
2000
White, non-Hispanic90.2%(114,177)
Black5.2%(6,543)
Hispanic / Latino2.5%(3,197)
Asian1.2%(1,571)
Diversity Score21.1%(26,693)
21
+10%since 1990
from 19 in 1990
1990 – 2024
Section 05

Education

44.4%
+10.1 ptssince 1990
from 34.2% in 1990
US average: 24.4%
High school or higher
90.1%
+8.2 ptssince 1990
from 81.8% in 1990
US average: 80.3%
14.2%
+3.4 ptssince 1990
from 10.8% in 1990
US average: 8.8%
Section 06

Commute & transportation

16.8 min
−33%since 1990
from 25.0 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

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Frequently asked

How many people live in Williamson County, Tennessee?

Williamson County, Tennessee has about 126,638 residents according to the 2000 Census.

What is the median household income in Williamson County, Tennessee?

The typical household in Williamson County, Tennessee earns about $69,104 a year. Half of households make more than that, and half make less.

Is Williamson County, Tennessee expensive?

In Williamson County, Tennessee, the median home is worth about $204,700, and the typical rent is about $744 a month.

How educated are people in Williamson County, Tennessee?

About 44.4% of adults age 25 and over in Williamson County, Tennessee hold a bachelor's degree or higher.

What is the poverty rate in Williamson County, Tennessee?

About 4.7% of people in Williamson County, Tennessee live below the federal poverty line.

Has Williamson County, Tennessee grown since 1990?

Yes, Williamson County, Tennessee has grown since 1990. The population has added about 45,617 residents, a change of about 56 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →