Where is Williamson County, Illinois?

location of Williamson county on a map — Location of Williamson County within the state of Illinois

Williamson County is a county equivalent area found in Illinois, USA. The county government of Williamson is found in the county seat of Marion.

With a total 1,150.87 sq. km of land and water area, Williamson County, Illinois is the 2365th largest county equivalent area in the United States. Home to 67,008 people, Williamson County has a total 30593 households earning 43125 on average per year.

Williamson County, Illinois - Quick Facts

FIPS Code	17199
Area Codes	618
Time Zone	CST
Major Cities	Marion (population: 27,076), Herrin (population: 12,926), Carterville (population: 9,839), Johnston City (population: 5,377), Creal Springs (population: 3,139), Pittsburg (population: 1,407), Energy (population: 1,235), Hurst (population: 813), Colp (population: 376), Cambria (population: 322)
Land Area	25,872 sq miles
Water Area	420 sq miles
Household Income	$43,125
Housing Units	30,593
Median Home Value	$93,700
High School Grads	89% of population
Holders of Bachelors Degrees	23% of population
Retail Spending	$15,370 per capita
Food & Accomodation Sales	$118,603 per capita
Universities and Colleges	John A Logan College