Saint Clair County is in Southwest Illinois. Of the 102 counties in the Prairie State, Saint Clair County ranks 29th in terms of size (431,325 acres). Recent Land Network data totals nearly 1,000 acres of farms for sale in Illinois's Saint Clair County, which is valued at a combined $5 million. The average price of farms for sale in Saint Clair County was $513,350. Farms for sale in Saint Clair County sustain 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 lifestyle needs.