Costco’s fiscal 2025 came with milestones, president and CEO Ron Vachris told investors on the retailer’s quarterly earnings call.

Among them: Costco marked its 40th anniversary of selling its hot dog and soda combo for $1.50, as well as its 30th year of its private label, Kirkland Signature.

In its fiscal 2025, Costco sold more than 345 million hot dog combos, more than 157 million rotisserie chickens, “and enough bath tissue to reach the moon and back over 200 times,” chief financial officer Gary Millerchip added.

The private label’s penetration of Costco’s total sales continued to increase in fiscal 2025, he said. Vachris added that Costco is moving Kirkland Signature products’ sourcing into countries and regions where it sells those items. In doing so, he said, Costco will lower its costs — in part by offsetting the effects of tariffs — and reduce emissions from transporting goods around the world.

Costco is No. 7 in the Top 2000 Database. The database is Digital Commerce 360’s ranking of the largest online retailers in North America by their annual ecommerce sales. It’s also the fourth-largest Mass Merchant in the database.

Costco is also among the “Big Four” Mass Merchants that Digital Commerce 360 covers in depth as part of the 2025 State of American Ecommerce Report.

Costco total sales in Q4 and fiscal 2025

Globally, Costco net sales grew to $84.43 billion in its fiscal Q4. That’s 8% year-over-year growth compared to $78.2 billion in its Q4 2024. For its full fiscal 2025, Costco net sales increased to $269.91 billion. That’s 8.1% growth compared to $249.63 billion the prior year.

Meanwhile, comparable sales increased at a slower rate as Costco opened 27 new locations in its fiscal 2025, including 10 in Q4. Total company comparable sales increased 5.7% year over year in Q4 and 15.6% for the full year. In the U.S., Costco saw comparable year-over-year sales growth of 5.1% and 6.2%, respectively, in Q4 and 2025.

Costco comparable sales in Canada increased 6.3% in Q4 and 5.0% in 2025. Internationally, aside from Canada, Costco comparable sales grew 8.6% in Q4 and 4.8% in 2025 overall.

Costco began opening earlier for its executive members on June 30. Vachris said the retailer’s estimates that the additional open hours have added about 1% to weekly U.S. sales.

Millerchip told investors that traffic, or shopping frequency, increased 3.7% worldwide in Q4. Costco’s average order value (AOV) increased 1.9% in the same period.

Costco’s sales of gold and jewelry, gift cards, toys and men’s apparel each increased double digits in Q4, Millerchip said, without quantifying specific increases.

Costco ecommerce sales in Q4 2025

In Q4, Costco ecommerce sales grew 13.6% year over year. And in its fiscal 2025 as a whole, they grew 15.6%.

For its full fiscal 2025, Costco ecommerce sales exceeded $19.6 billion. Although that marks 15.6% year-over-year growth, it represents 7.26% of Costco total sales in its fiscal 2025.

Millerchip noted that starting after Q4, Costco will incorporate all sales that originate online — including those using same-day delivery services Instacart, Uber Eats and DoorDash — into its ecommerce comparable sales metric. He attributed the change to feedback from investors and said Costco’s business from Instacart and Uber Eats “continues to grow at a good rate.”

Vachris said Costco continues “to make progress with our technology road map for digital and ecommerce.”

In Q4, he said, Costco made enhancements to boost ecommerce sales, including:

• Using data augmentation to improve search effectiveness.
• Adding password-less sign-in to its mobile app.
• Creating a waiting room for high-velocity items such as Pokémon cards.

The waiting rooms reduce the traffic from bots, he said. As a result, they also “increase the opportunity for members to purchase high-demand items while improving the speed and the stability of the site during peak-traffic periods.”

Millerchip identified the categories leading Costco ecommerce sales with double-digit growth:

• Gold and jewelry
• Housewares
• Apparel
• Tires
• Sporting goods
• Large appliances and electronics (which Costco refers to as “majors”)
• Small electronics
• Lawn and garden
• Domestics

The share of majors the retailer sells online continues to grow, Millerchip said, crediting its investments in Costco Logistics, which delivered 13% more items in Q4.

How Costco is using its retail media network

Ecommerce site traffic increased 27%, Millerchip said. Costco has “launched more relevant messaging” on its homepage to highlight different offers depending on individuals’ membership type and co-brand credit card status, he said.

The increase in site traffic and Costco’s targeted “digital capabilities are also a key enabler for retail media, as they allow us to target specific ads that deliver greater value for both members and suppliers while always honoring the privacy choices of our members,” he added.

He provided an example to investors that Costco launched a series of marketing campaigns for Kimberly-Clark, which produces products from brands including Kleenex, Huggies and Scott. Costco’s retail media campaigns for Kimberly-Clark generated:

• 14:1 return on ad spend
• 22% increase in traffic to product detail pages (PDPs)
• 45% increase in digital sales for the promoted items

How many members does Costco have?

Costco ended its Q4 with 81 million paid household members. That’s up 6.3% year over year. It’s also an increase from 79.6 million in Q3.

Of those, 38.7 million had paid executive memberships — 9.3% more than at the end of Q4 in its fiscal 2024. Executive members represented 47.7% of paid members, yet 74.2% of worldwide Costco sales.

Costco also ended Q4 with 145.2 million cardholders, a 6.1% year-over-year increase. That’s also up from 142.8 million cardholders in Q3.

In Q4, Costco generated $1.72 billion in membership fee income. That’s 14% year-over-year growth, or an increase of $212 million. At the end of Q4, Costco’s U.S. and Canada membership renewal rate was 92.3%. Worldwide, it was 89.8%. Both renewal rates declined compared to Q3, when they were 92.7% and 90.2%, respectively.

Millerchip attributed the renewal declines to an increase in online sign-ups entering the renewal rate, as well as a Groupon campaign from December 2023.

“Overall, we view the growth in online sign-ups as a net positive as they are helping to grow our overall membership base and membership revenue and are also introducing younger members to Costco,” Millerchip said. “Almost half of our new member sign-ups are now under the age of 40.”

New online members renew at a lower rate, on average, but have grown as a percentage of sign-ups in recent years, he added.

“We would, therefore, expect to continue to see a small decline in our renewal rate as this change in membership mix gets fully reflected in our renewal rate calculation.”

How many countries have a Costco?

As of the end of its fiscal Q4 2025, Costco operates 914 warehouses. Of those, 629 are in the United States and Puerto Rico. Listed by amount, the rest are in:

• Canada (110)
• Mexico (42)
• Japan (37)
• The United Kingdom (29)
• South Korea (20)
• Australia (15)
• Taiwan (14)
• China (7)
• Spain (5)
• France (2)
• Sweden (2)
• Iceland (1)
• New Zealand (1)

Costco operates ecommerce sites in:

• Australia
• Canada
• Japan
• Mexico
• South Korea
• Taiwan
• The United States
• The United Kingdom

Percentage changes may not align exactly with dollar figures due to rounding. Check back for more earnings reports. Here’s last quarter’s update on Costco ecommerce sales.

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