Marion County is located in southern Illinois. The County Seat is Salem and the largest city is Centralia. The Official Web Site is located at http://marioncountycircuitclerk.org/. The 2014 population estimate is 38,571 and the 2010 census population was 39,437. The land area is 572.36 square miles and there are 68.9 persons per square mile.
93.4% of the population is White, 4% is Black or African American, 1.7% is Hispanic or Latino, 0.6% is Asian, 0.3% is American Indian or Alaska Native, 0% is Native Hawaiian or Pacific Islander, and 1.6% is two or more races. 86.7% have a high school degree or higher, and 13.9% have a Bachelor degree or higher.
The median home value is $70,300, there are 15,893 households, an average of 2.41 persons per household. The per capita income is $21,887, the median household income is $41,010, and 18.1% of the persons in Marion County are considered below poverty level.
The total number of firms, at last estimate, was 3,236. Retail sales (in $1000) were $345,728, and sales per capita were $8,734.
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