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Cities and Towns in the United States > State Illinois > Williamson County
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Williamson County, located in the southern region of Illinois, is characterized by its picturesque landscapes and rich history. Visitors can explore the unique rock formations at Giant City State Park, experience the vibrant arts scene in the city of Marion, or learn about the area's coal mining heritage at the Williamson County Historical Museum. The county is also known for hosting the annual Southern Illinois Music Festival, drawing music enthusiasts from across the region. Whether taking in the natural beauty of Crab Orchard National Wildlife Refuge or enjoying the lively atmosphere of local events, Williamson County offers something for every visitor to appreciate.

Get the contact information for all cities and towns in this county. Find general information, official websites, email, phone numbers, addresses, and much more.

Williamson County administration contact details

Williamson county administration contact details407 N Monroe St, Marion, IL 62959
County seatMarion
Phone number(618) 997-1301
Official websitewww.williamsoncountyil.gov
County clerkAmanda T. Barnes
County fiscal officerJames W. Marlo

Williamson County, IL Sheriff's Office and Jail Information

Number of prisons1
Jail namesWilliamson County Jail
Sheriff office address404 North Van Buren Street, Marion, IL 62959
Sheriff office phone number618-997-6541
Inmate search informationTo locate an inmate in Williamson County, contact the Williamson County Sheriff's Office or use their online inmate search tool available on their official website.
Clerk of Court nameAmanda Barnes
Clerk of Court address200 West Jefferson Street, Suite 260, Marion, IL 62959

Williamson County (IL) Statistics

Number of cities/towns/villages37
Population67,153 people
Area444 sq mi
Density151 /sq mi
Altitude433 ft
GDP$4,100,000,000
Median Household Income$56,789
Poverty rate13%
Unemployment rate5%
Educational Attainment (Bachelor's Degree or higher)20%
Crime rate4,576 incidents/year

Environmental risk in Williamson County, IL

Overall riskRelatively Moderate
Expected Annual LossRelatively Moderate
Social VulnerabilityRelatively Moderate
Community ResilienceRelatively High
Avalanche RiskNot Applicable
Coastal Flooding RiskNot Applicable
Cold Wave RiskNo Rating
Drought RiskRelatively Low
Earthquake RiskRelatively Moderate

Data obtained from the FEMA National Risk Index.

counties surrounding Williamson

Franklin 18.1 milesJohnson 18.9 milesSaline 21.3 miles
Jackson 25 milesUnion 25.2 milesPope 29.8 miles

List of cities and towns in Williamson County by population size

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