Williamson County

Williamson County has 66,876 residents across 12 ZIP codes with their own report. Median household income is $65,604, 21% below the Illinois figure. The typical owner-occupied home is valued at $156,400, and 26% of adults 25 and over hold a bachelor’s degree or higher.

County · ACS 2020–2024 · Updated October 24, 2026

66,876residentsACS 2020–2024

$65,604median household incomeIllinois: $83K

$156,400median home valueowner-occupied homes

88%of households have broadbandhome internet subscription

Williamson County in IllinoisZIP codes in Williamson County highlighted; the rest of Illinois in grey

Map of Illinois with Williamson County highlighted

Sources: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates · U.S. Census Bureau, 2024 Gazetteer and 2020 ZCTA relationship files

All 12 ZIP codes.

Colour shows where each zip code sits among the others in the table, from lowest to highest.

ZIP code	Residents	Household income	Home value	Owners	Bachelor's+	Broadband	Commute
62841	118	$32K	$61K	96%	13%	74%	21 min
62902	4,135	$84K	$208K	76%	47%	95%	22 min
62915	384	$32K	$107K	47%	9%	90%	21 min
62918	10,658	$71K	$200K	64%	40%	91%	22 min
62921	233	$-666667K	$75K	77%	17%	81%	30 min
62922	2,608	$74K	$175K	85%	16%	69%	36 min
62933	1,101	$68K	$156K	80%	23%	86%	22 min
62948	12,758	$61K	$117K	66%	23%	88%	22 min
62949	702	$37K	$75K	54%	16%	77%	30 min
62951	5,342	$51K	$100K	78%	16%	89%	19 min
62959	27,793	$71K	$175K	71%	27%	87%	26 min
62974	1,536	$64K	$199K	83%	20%	96%	29 min

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

People.

66,876 residents in 28,983 households, next to the Illinois figure.

21%

under 18

19%

aged 18–34

20%

aged 65 and over

31%

of households are people living alone

47%

of households are married couples

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

Homes.

32,084 housing units; the median owner-occupied home is valued at $156,400 (±$5,461).

71%

of households own their home

75%

of homes are detached single-family houses

are in buildings with 5 or more units

are mobile homes

10%

of housing units are vacant

$930

median gross rent a month

When homes were built

2020 or later1%

2010–201911%

2000–200915%

1990–199912%

1980–198911%

1970–197914%

1960–19699%

1950–19597%

1940–19495%

1939 or earlier15%

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

Income and work.

Household income and work, in 2024 dollars; median household income ±$3,466.

$65,604

median household income

13.8%

of people live below the poverty line

5.0%

unemployment rate

26%

of adults 25+ hold a bachelor’s degree or higher

The poverty rate uses the federal poverty thresholds, which vary with family size. It says nothing on its own about what a neighborhood is like to live in.

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

Getting around.

How workers aged 16 and over get to work, and how long it takes.

25 min

average commute to work

11%

of commuters travel 45 minutes or more

89%

of workers drive or carpool

take public transportation

walk or bike

work from home

of households have no car

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates

Internet.

Home internet subscriptions.

88%

of households have a broadband subscription

have no internet access at home

American Community Survey figures are estimates from a rolling sample, averaged over 2020–2024. Each comes with a margin of error, which is wider in places with fewer people.

Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates