Williamson County is a district of Illinois.
Boundaries: United States Census Bureau, MAF/TIGER Database (https://www.census.gov/geographies/mapping-files/time-series/geo/carto-boundary-file.html) via geoBoundaries, public domain
| City of Johnston City | no seat recorded |
Nothing has been written about Williamson County here, and neither Wikipedia nor Wikivoyage has an article we could draw one from. If you know the place, that makes you a better source than anything we have. Tell us what is worth knowing and where you got it.
We show Marion as the capital of Williamson County. If that is wrong, tell us what it should be and where you read it.
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