Costco Wholesale Search | Advanced Search | New Members | Coupons and Discounts | All Categories Shopping & Specialty Retail >> Retail Costco Wholesale 1540 Froom Ranch Wy.San Luis Obispo, CA 93405 | map | directions (805) 541-7000 | fax: (805) 541-7021 Visit Site Member Since: 2017 Send a message to: Costco Wholesale Your Name: Your Email: Subject: Message: (Date: 9/24/2023) If your business isn't here, contact us today to get listed!