All Williamson County population data above are from the US Census Bureau.
With 67,466 people, Williamson County is the 22nd most populated county in the state of Illinois out of 102 counties. But watch out, Williamson County, because Adams County with 67,013 people and Jackson County with 59,362 people are right behind you.
The largest Williamson County racial/ethnic groups are White (90.7%) followed by Black (4.1%) and Hispanic (2.3%).
In 2015, the median household income of Williamson County residents was $44,453. Williamson County households made slightly more than Clay County households ($44,209) and Hamilton County households ($44,159) . However, 15.0% of Williamson County residents live in poverty.
The median age for Williamson County residents is 41.0 years young.
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The District of Columbia Starter Report, shown on the left, will give you a good idea of what to expect in a Starter Report. The Williamson County, IL report will have the same data, charts & graphs as this sample.
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