Costco: July 4, 2018 by Rhonda July 16, 2020 721 7/4/18. Happy 4th of July! Costco will be closed today. 0 FacebookTwitterPinterestThreadsBlueskyEmail previous post Costco Sale: Cascade Mt.Tech Carbon Fiber Trekking Poles $24.99 next post Costco: Cuisinart Mandoline Slicer $19.99 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,...