Costco Diaper Return Policy (All You Need To Know)

Costco sells a variety of reasonably priced baby products at its warehouse locations and online such as baby diapers from notable brands like Pampers, Huggies, and Kirkland Signature.

However, what if you’ve accidentally bought the wrong-sized diaper or realized that your baby no longer needs it? Here is everything I’ve found out about Costco’s diaper return policy!

Costco Diaper Return Policy

Costco allows members to return diapers in-store or via free UPS/USPS mail at any time. You can also return opened diapers that have not been used. Provide a receipt or your membership number to verify your purchase and get a full refund or an exchange.

If you want to learn more about how to return diapers without a receipt, the process of returning diapers via mail, and much more, keep on reading!

What Is The Easiest Way To Return Diapers To Costco?

The easiest way to return diapers (by brands such as Huggies, Pampers, Kirkland Signature, and Rico) is to head over to a nearby Costco warehouse and request a return at the customer service desk.

For a hassle-free checkout, bring along a valid proof of purchase such as a store receipt, packing slip, or online invoice.

Additionally, make sure you have the exact credit or debit card you originally used since it will be needed to process a refund. You will be refunded on the spot if you had paid for the diaper using cash.

If the size you are looking for is not available, you may need to come back after a shipment has arrived or get a refund and purchase the correct size online.

Can You Return Opened Diapers To Costco?

Costco’s return policy is relatively lenient and so allows returns of open diaper packages. Most Costco locations will return diapers even if a few are missing, as long as the majority of diapers are still there.

However, you may need to provide a reason for returning the opened diapers such as the diapers being the wrong fit or reacting poorly with your little one.

How Long Do You Have To Return Diapers To Costco?

Members can return diapers at any time if they are not satisfied with the product or their child has grown out of them.

Unlike most retailers, Costco does not time-restrict returns on most items and so you can return the diapers at any time for a full refund or exchange them for a new pair or another product.

Can You Return Diapers To Costco Without A Receipt?

Can You Return Diapers To Costco Without A Receipt?

You can return diapers to Costco even if you do not have a receipt since Costco has other ways of verifying your transaction.

For example, cashiers can enter your membership number into the computer to locate your transaction.

Once the cashier has authorized the purchase of your diapers, you can proceed with a complete refund, exchange, or replacement (where applicable) without paying any restocking fees.

However, be aware that Costco keeps track of each return to ensure customers are not abusing the system through repeated returns without a receipt.

Can You Exchange Diapers For An Alternative Size At Costco?

Members are more than welcome to directly exchange purchased diapers with the same or similar product in a different size.

If the new diapers cost slightly more than the previous ones, you will need to pay the difference.

How Do You Return Diapers Purchased At

Diapers purchased at can be easily returned by mail if:

  • You are unsatisfied with the diapers
  • You bought the wrong size or model
  • Your child no longer requires diapers
  • You received the incorrect diapers in delivery
  • Duplicate diapers were delivered
  • Diapers were damaged or the packaging was torn
  • Your order was lost in transit

To initiate the return, log in to your account to review your order history and press ‘Return Items’ on each diaper product you no longer require.

After that, decide whether you’d prefer a refund or replacement and follow the prompts.

Costco will provide a free printable shipping label that must be attached securely to the package. You can drop the parcel at Costco’s key delivery services, UPS and USPS.

For your convenience and protection, make sure you receive a postage receipt or tracking information. Costco will process your return and send you the refund once it receives the package.

When Will You Receive A Refund From Costco?

Refunds at Costco are distributed using the same method you originally paid with, so it is essential to bring the credit or debit card you used.

In-store card refunds are dispensed immediately and funds should appear in your account within 48 hours. Meanwhile, cash refunds are distributed on the spot.

The amount you paid for diapers using a Costco shop card will be returned onto the same or a new card.

Additionally, if you are a non-member and received diapers as a gift, the funds will also be placed onto a Costco shop card that can be used both in-store and online.

To learn more about the baby product policies of other retail chains, check out our related posts about Target’s diaper return policy, Walmart’s baby formula return policy, and the Walmart baby registry.


Costco’s 100% satisfaction guarantee allows customers to return diapers anytime if they are unsatisfied. Receive a full refund or exchange when you show proof of purchase such as a receipt or provide your membership number if you have lost the receipt.

Additionally, Costco enables the return of open diapers, provided they are unused. The quickest way to return diapers is in-store, however, online purchases are returnable via free UPS or USPS delivery.

Photo of author

Marques Thomas

Marques Thomas graduated with a MBA in 2011. Since then, Marques has worked in the retail and consumer service industry as a manager, advisor, and marketer. Marques is also the head writer and founder of

Leave a Comment