Cities in Williamson County, United States ( 8 )
- Marion, Illinois ( 17,193 )
- Herrin, Illinois ( 12,501 )
- Lumberton, Texas ( 11,943 )
- Somerset, Kentucky ( 11,196 )
- Silsbee, Texas ( 6,611 )
- Carterville, Illinois ( 5,496 )
- Manchester, Georgia ( 4,230 )
- Johnston City ( 3,543 )