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Costco Promo Codes for December 2025: Where Big Deals Cost Less

Costco Promo Codes for December 2025: Where Big Deals Cost Less

Updated: Dec, 29 2025

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Looking to stretch your savings even further at Costco? You're in the right place! Costco promo codes are your ticket to even better deals on everything from household essentials to electronics and more.

Costco Promo Codes for December 2025: Where Big Deals Cost Less

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About Costco

Costco Wholesale is one of the world’s largest and most trusted warehouse retailers. Operating across eight countries, Costco is recognized for providing quality brand-name products at competitive prices. 

With hundreds of locations, they offer a wide range of products, including groceries, electronics, furniture, and everyday essentials.

Costco stands out not only for its value but also for its commitment to quality, ethics, and employee well-being. Despite its global scale, Costco maintains a friendly atmosphere.

Costco is a smart and convenient choice for shoppers looking to save.

How to Use Your Costco Promo Code

  1. Start by browsing products on Costco.com and add your chosen items to your cart by clicking “Add to Cart” on the product page. 
  2. Select “View Cart” from the pop-up panel.
  3. Click the “Checkout” button. 
  4. Find the field labeled “Promo Code,” and enter your code.
  5. Hit “Apply Code” to activate your savings.

How to Reach Costco Customer Support

If you need help with an order placed through Costco’s online store, you can reach their customer service team by calling 800-955-2292. 

Customer service representatives are available from 5 a.m. to 8 p.m. PST on weekdays, and from 5 a.m. to 7 p.m. PST on weekends.

You can also get assistance through live chat on Costco’s website for any questions or concerns.

Jennifer Hunter

Jennifer Hunter is a senior editor for RetailCoupons.com covering deals, coupons, apparel, accessories, and pets.

Reader Reviews

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Mala Palit

December 28, 2025

Treat customers like criminals at the exit check.

The Schaumburg, IL Costco tends to treat Seniors like bumbling thieves. There door monitors are the worst of any of the 3 Costco’s in the vicinity. I was shopping at Costco early morning trying to avoid the crowd. When the lady checked the receipt at the door she marked it then went through my cart a second time and told me the bread was not paid for. It was not my fault as the cart went through their aisle, her attitude was I took it. How do I steal two loves of bread when I only bought six things total. When I expressed my displeasure at this treatment she said she was calling the manager and not security, insinuating she was doing me a favor. I am a regular Executive Customer at Costco, I purchase majority of my groceries and other products there. I will definitely reduce my purchases as i have noticed the people at the door have an attitude of treating you like a thief, especially Seniors. When we go to grocery stores there is no one checking receipts, how do they survive. I will be reporting this matter to the appropriate authorities. The employee then started arguing I had no right to tell her anything. I requested the front desk manager to give me the Store Manager’s number or email she provided me with the general CS number.

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Manpreet

December 28, 2025

Sunbury costco is good for shopping…

Sunbury costco is good for shopping place but there is no staff to ask where the products are. As they moved everything from the normal place to another place.

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Terri

December 28, 2025

I brought a box of mangos on Saturday…

I brought a box of mangos on Saturday the 27th and they are all off and rotten on the inside the outer flesh did not look decayed in any way that's why I purchased them the box cost me £8.99 I am appalled and discussed that you would sell this. Is this what you think is quality. I wish there was somewhere to upload the picture of the mangos what a waste of money.

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Steve Ackman

December 27, 2025

If you can't see it and transport it don't do it.

Ordered a dishwasher with delivery and installation. Notified of delivery and installation date. Told to expect notification call in advance of deliver. Date arrives .... no call ..... no delivery. Calls to COSTCO and their chosen installation team results in notification delivery and installation would not take place for another 12 days. Don't know why they think we believe that whopper. Technical ability to install and ability to manage when and information flow are probably closely linked. UPDATE: Direct Connect Connections (contractor) arrived this date, made contact in advance and arrived as stated. Installation was done well and cheerfully with a challenging sink that would have me cursing. As of this date and time I say five stars.

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Y Rei

December 24, 2025

Today at Christmas eve I had to make…

Today at Christmas eve I had to make some buys at Costco. I arrived at 9.55am. All lot of people were waiting patiently. I decided to go ahead and enter. They did not let me . I discussed with whatever person of Costco that it was ridiculous. At that time who cares who enters. I had to get back out. At that time they lost me as a regular customer. Giving this incentive to executive customer s and enforcing it made them look ridiculous. Which executive customer cared about letting customers in early as they used to do before the ridiculous incentive. When ten o clock arrived the had to.write down their statistics so regular customershad to wait another minute. If you arrive with your incentive at nine, it makes sense. But at 9.55 it does not.costco management think about how not to piss off regular customers. SamsClub is just down the street.

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Chonni Studios

December 24, 2025

Avoid this Costco — Unprofessional Staff!

During our visit to the Costco location (976 3rd Ave) , several Asian male employees handled merchandise carelessly at checkout, causing multiple items to hit our feet. When we mentioned the items be handled more carefully, the staff continued to argue instead of addressing the issue. Despite our repeated requests to end the conversation, the employees failed to disengage and continued verbal interaction, which contributed to the escalation and required supervisor intervention. Other nearby customers also observed the incident and noted the unprofessional and rude behavior.We expect this incident to be addressed promptly, and recommend additional training to ensure employees adhere to proper standards and prevent similar occurrences. Costco’s failures to resolve this issue may result in cancellation of our Executive memberships and relocating our purchases to another retailer.

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Theresa Blalock

December 22, 2025

I really enjoy shopping because I can…

I really enjoy shopping because I can take my time wandering down each aisle and do some fun price comparisons. Plus, tasting samples is such a nice bonus, and ordering my pizza to go while I check out is just the best!

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T A SPENCER

December 18, 2025

DOES NOT SHIP TO MEMBER'S HOUSES THAT…

DOES NOT SHIP TO MEMBER'S HOUSES THAT ARE NOT IN THEIR SHOPPING AREA!!! I AM A BUSINESS MEMBER AND JUST WASTED AN ANNUAL MEMBERSHIP FEE!!!!!!!!!!!!!!!!!!!!!! SAM'S CLUB DOES DELIVER TO OUT OF AREA MEMBERS!!!!!!!!!!!!!!!!!!!!!

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Chris Land

December 18, 2025

Not allowing some members to go the…

Not allowing some members to go the first hr Costco is open is ridiculous. I just watched you turn away 3 different families because they were members but their shopping time didn’t start till 10am… they’re trying to force you to upgrade your membership just to shop when they open. I hate businesses that do this stuff.

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Sean Kirklin

December 18, 2025

Very poor customer service.

I bought a set of tires at Costco 10 months ago and get the road hazard warranty with my tires. I hit a rock last week and blew a tire out. It took Costco 8 days to get my tire in. I called around 15 times to check on the status and they never pick up the phone in the tire center. This is my 3rd time experiencing this type of customer service from their tire center. I had to drive up to the warehouse 3 different times to finally find out that my tire was in, yet nobody called. The customer service guy had to go through a stack of 20 pieces of paper to see if my tire had arrived, even though this is the 21 century. Lastly, they couldn't get me in to change my 1 tire until later this afternoon. The entire change would probably take 10 minutes. This is some of the worst customer service that I have ever seen from any type of tire company. I think Costco needs to decide whether they want to be in the tire business or not. For a company that I overall really enjoy shopping at, this has been a horrible and very costly experience for me. It has left me without a car to drive for 8 days, because of how unsafe it is to drive a car with the emergency donuts.

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