Contact Us Coffee King Roasting & Supply Co. 1301 3rd St Sioux City, IA 51101 Work Hours Monday to Friday: 8am - 5pm Email Address orders@coffeekinginc.com Phone Numbers 1-712-239-5000 1-800-728-8007 We’d love To Hear From You! Please enable JavaScript in your browser to complete this form.Please enable JavaScript in your browser to complete this form.Name *FirstLastEmail *SubjectComment or MessageSubmit