Iowa Corn Growers Association 5505 Northwest 88th Street , Johnston , 50131 Agriculture XPRT News About Solutions products industries Latest news Home Companies Iowa Corn Growers Association Locations Iowa Corn Growers Association Show or hide locations in map Headquarters Office locations Locations served Distributors Manufacturer Iowa Corn Growers Association Headquarters 5505 Northwest 88th Street Johnston IA 50131 Phone/Fax Number