St. Clair County, Illinois
St. Clair County, Illinois is a Democrat-controlled county in Southern Illinois, having its county seat in Belleville. This County has not become more Republican as its surrounding counties have become in the Trump era.[1] The population of St. Clair County has declined to 252,671 as of 2022, with an unemployment rate of 5.7% as of June 2024.
In the 2020 presidential election, St. Clair voted for Biden by 53.2% to 44.5% for Trump, or about 68,000 to 57,000.
St. Clair County's population is 257,400, according to the census, and declined by 6.5% between 2010 and 2022.[2] Its demographics are roughly 60% white, 30% black, 5% Hispanic, and perhaps 2% Asian.
St. Clair County includes East St. Louis, one of the most depressed and crime-ridden cities in the United States.
Towns
Significant cities in St. Clair County include:
- Belleville
- Cahokia Heights
- Caseyville
- Collinsville
- Columbia
- East St. Louis
- Fairview Heights
- Lebanon
- Madison
- Mascoutah
- Millstadt
- O'Fallon
Collinsville, Venice, and Granite City are in adjacent Madison County.
Waterloo -- population only 11,000 -- is the county seat located on the northeast side of the adjacent Monroe County.
Other St. Clairs
There is a St. Clair County in Michigan, and also in Alabama.