St. Clair County is located in southwestern Illinois. The County Seat is Belleville and the largest city is Belleville. The Official Web Site is located at http://www.co.st-clair.il.us/. The 2014 population estimate is 265,729 and the 2010 census population was 270,063. The land area is 657.76 square miles and there are 410.6 persons per square mile.
65.7% of the population is White, 30.4% is Black or African American, 3.7% is Hispanic or Latino, 1.4% is Asian, 0.3% is American Indian or Alaska Native, 0.1% is Native Hawaiian or Pacific Islander, and 2.2% is two or more races. 89.5% have a high school degree or higher, and 25.3% have a Bachelor degree or higher.
The median home value is $123,700, there are 102,885 households, an average of 2.57 persons per household. The per capita income is $26,234, the median household income is $50,578, and 17.6% of the persons in St. Clair County are considered below poverty level.
The total number of firms, at last estimate, was 17,080. Retail sales (in $1000) were $3,087,185, and sales per capita were $11,818. The percentage of black-owned firms is 13.5%, and the percentage of women-owned firms is 33.3%.
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