Prairie Farms Dairy is a dairy cooperative founded in Carlinville, Illinois, and headquartered 35 miles to the south in Edwardsville, Illinois, a suburb within Greater St. Louis. As a dairy cooperative, Prairie Farms receives milk from producers and converts it into many different products, including cheese, butter, ice cream, sour cream, cottage cheese, various dips, yogurt, and fluid milk. Prairie Farms also produces and sells juices, flavored drinks, and pre-made iced tea.