Williamson County, Illinois

Property records, parcel maps, and county statistics for Williamson County, Illinois.

Pop. 66,902

Search Williamson County properties

66,902

Population

$65,521

Median Income

$37,096

Per Capita Income

4.3%

Unemployment

County statistics

Economic Data

Labor Force: 31,581
Poverty Rate: 14.3%
Building Permits (2023): 83
New Housing Units (2023): 129

Health & Safety

Healthcare Shortage Area: Yes
HPSA Score: 23
Disaster Declarations (10yr): 2
County FIPS: 17199

Other Counties in Illinois

Cook County Dupage County Lake County Will County Kane County Mchenry County Winnebago County Madison County St Clair County Champaign County Sangamon County Peoria County View all 102 counties →

About Williamson County, Illinois

Williamson County is located in Illinois with a population of 66,902. The median household income is $65,521, and the unemployment rate is 4.3%. CLILU provides free access to parcel maps and property ownership records for Williamson County.

Use the interactive map to search for properties by owner name or address. View parcel boundaries, acreage, and assessed values sourced directly from county assessor records.