Costco is Closed on the 4th of July (2022) by Rhonda July 4, 2022 648 Happy Independence Day! Costco will be closed today, July 4, 2022. Even though Costco stores are closed today in observance of Independence Day, costco.com is open and is having a huge sale! Check out the deals at costco.com, while supplies last. Costco.com SALE! 0 FacebookTwitterPinterestEmail previous post Sunforce Solar String Lights – Costco Sale! next post Grandware 6-Drawer Wooden Orchard Rack at Costco! You may also like Costco Hot Buys Sale: 3/29/25 – 4/6/25 Permasteel 46″ Rolling Work Bench at Costco! Bond Bloomington Cascading Cup Fountain at Costco! Costco Unadvertised Sales! MARCH 2025 Costco Coupon Book MARCH 2025 Costco Hot Buys Sale: 2/22/25 – 3/2/25