Costco cakes are known for their quality and affordability, perfect for any occasion. They offer two main sizes: a 10-inch round cake that serves up to 16 people and a half-sheet cake that serves up to 48 people. Popular designs include roses, balloons, and themed cakes for birthdays and holidays. Ordering is simple, requiring a form filled out at least two days in advance at the local Costco. Costco cakes need refrigeration and can last 3-4 days. Their cakes are customizable and well-regarded for their delicious taste.
Cake Sizes Offered by Costco

Costco provides a selection of cake sizes to cater to different needs and occasions. Here are the cake sizes available:
- 10-Inch Round Cake:
- Serves approximately 16 people.
- Ideal for smaller gatherings.
- Half-Sheet Cake:
- Serves up to 48 people.
- Perfect for larger events and parties.
These sizes are consistent across various Costco locations and offer excellent value for their price, making them a popular choice for celebrations
Costco Cake Sizes and Customization Options
Costco offers two primary cake sizes to cater to different event needs:
- Half-Sheet Cakes:
- Size: 12 inches x 16 inches
- Servings: Approximately 48
- Flavors: Available in vanilla with vanilla cheesecake mousse and white buttercream icing, or chocolate with chocolate mousse filling and chocolate buttercream icing.
- Price: Around $24.99
- Round Cakes:
- Size: 10 inches in diameter
- Servings: Approximately 16
- Flavors: Similar to the sheet cakes, with vanilla or chocolate options.
- Price: Approximately $15.99
Customization Options
Costco allows for extensive customization, making their cakes suitable for any occasion. Here are some of the popular designs:
- Roses/Bouquet: Available in various colors or classic white.
- Balloon Designs: Ideal for birthdays, featuring colorful balloons.
- Rainbow: A vibrant six-color rainbow arching across the cake.
- Teddy Bear: A playful design perfect for children’s parties.
- Graduation Themes: Includes a graduation cap and customizable colors to match the school.
- American Flag: Patriotic design ideal for holidays like the 4th of July.
- Sports Themes: Designs featuring baseball, basketball, football, golf, hockey, tennis, soccer, or skateboard motifs.
Each customized cake typically costs around $29.99, but prices may vary based on the complexity of the design.
Costco vs. Sam’s Club Cake Sizes
Costco and Sam’s Club both offer affordable, quality cakes. Costco has 10-inch round cakes for 16 people and half-sheet cakes for 48. Sam’s Club offers more options, including 8-inch and 10-inch round cakes, half-sheet cakes, and full-sheet cakes for up to 96 people. Both stores offer customization, but Sam’s Club provides more detailed themes and personal images.
| Cake Sizes | Servings | Price | Flavors |
|---|---|---|---|
| Costco 10-Inch Round | 16 | $15.99 | Vanilla with vanilla cheesecake mousse, or chocolate with chocolate mousse filling |
| Costco Half-Sheet | 48 | $24.99 | Vanilla with vanilla cheesecake mousse, or chocolate with chocolate mousse filling |
| Sam’s Club 8-Inch Round | 8-12 | $13.99 – $19.99 | White, chocolate, marble |
| Sam’s Club 10-Inch Round | 12-16 | $22.50 | White, chocolate, marble |
| Sam’s Club Half-Sheet | 36-48 | $21.98 | White, chocolate, marble |
| Sam’s Club Full-Sheet | 72-96 | $48.99 | White, chocolate, marble |
Both stores offer great cakes, but Costco is best for value and simplicity, while Sam’s Club is ideal for more size options and detailed customizations
Final Thought!
Costco cakes are affordable and high-quality, available in two main sizes: a 10-inch round cake for 16 people and a half-sheet cake for 48 people. They offer various customizable designs and are ideal for any celebration. Compared to Sam’s Club, Costco provides better value, while Sam’s Club offers more size options and detailed customizations.

For Costco make a marble cake? Or a half & half.. half vanilla and half chocolate?