Smyrna Clayton Coop Locations Smyrna Clayton Coop Smyrna Clayton Coop Address and Contact Address: 227 School Lane Clayton, DE 19938 US Phone: (302)653-6634 Fax: (302)653-0171 Email: smyrna-clayton@sscoop.com Business Hours Sun Closed Mon - Fri 7:00 am - 5:00 pm Sat 8:00 am - 12:00 pm