County
· Illinois
Williamson County
Williamson County is a county in Illinois. At the 2020 census, it had a population of 67,153. Its largest city and county seat is Marion. Williamson County is part of the Metro Lakeland area of Southern Illinois.
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Cities and towns 15
- City of Carterville pop. 5,828
- City of Creal Springs pop. 502
- City of Herrin pop. 12,253
- City of Hurst pop. 757
- City of Johnston City pop. 3,349
- City of Marion pop. 16,742
- Village of Bush pop. 240
- Village of Cambria pop. 1,759
- Village of Colp pop. 171
- Village of Crainville pop. 1,460
- Village of Energy pop. 969
- Village of Freeman Spur pop. 264
- Village of Pittsburg pop. 563
- Village of Spillertown pop. 178
- Village of Stonefort pop. 217
Reference data (Census of Governments 2022)
- Census ID (PID6)
- 207767
- FIPS state
- 17
- FIPS county
- 199
- FIPS place
- 99199
- Census record name
- COUNTY OF WILLIAMSON
- Mailing address
- 407 N MONROE ST STE 119, MARION 62959