Costco Wholesale Categories Stores (Membership) 2200 E. Willow St. Signal Hill CA 90755 (562) 424-8808 (562) 426-9748 Send Email Visit Website Rep/Contact Info John Grove × John Grove Send an Email Anastacio Maese × Anastacio Maese Send an Email Francis McDougall × Francis McDougall Marketing Manager Phone: (562) 424-8808 Send an Email Share × Print Email Facebook Twitter LinkedIn Tell a Friend ×