Marion County is in Southern Illinois. Of the 102 counties in the state, Marion County is 42nd in terms of its size (576 square miles). Recent listings of farms for sale in Marion County, Illinois, totals nearly 1,000 acres and a combined market value of around $900,000. The most common type of land for sale by combined acreage in Marion County is residential property. The average price of farms for sale in Marion County was $204,975. Farms for sale in Marion County feature livestock including horses, cattle, goats, sheep and pig. Browse all Illinois farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future business or individual needs.