Costco is Closed on the 4th of July (2024) by Rhonda July 4, 2024 321 Happy Independence Day! Costco will be closed today, July 4, 2024. Costco stores are closed today in observance of Independence Day. If you are in the mood to shop, visit costco.com for their 4th of July online sale! While supplies last. Costco.com SALE! 0 FacebookTwitterPinterestEmail previous post Costco Sale: Catry Kasio 55″ Cat Tree next post Costco Sale: Cuisinart Custom Select 2-Slice Toaster You may also like Costco Coupon Book APRIL 2025 Costco Business Center Coupon Book: APRIL / MAY... 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