Costco Closed on July 4, 2020 by Rhonda February 4, 2021 698 7/4/20. Happy Independence Day! Costco will be closed today. 0 FacebookTwitterPinterestThreadsBlueskyEmail previous post Nuwave Brio 6-Qt Air Fryer – Costco Sale! next post Cuisinart Custom Select Toaster-Costco Sale! You may also like Costco Coupon Book SEPTEMBER 2025 Costco Hot Buys Sale JULY 2025 Peaches and Cream Bar Cake from the Costco... Fried Chicken and Waffles at Costco! Costco Coupon Book JUNE / JULY 2025 NEW Costco Executive Member Benefits Starting June 30,...