Best Mattress Costco King Size Deals for 2025: Comfort and Savings Combined
A king size mattress is a significant investment in your sleep health, and choosing the right one requires careful consideration of factors like material, firmness, and price. Costco offers a variety of king size mattresses designed to meet diverse needs, ensuring you find the perfect match for your sleeping habits. Below, we break down the top options available, their benefits, and how they compare to help you make the best choice.

Types of King Size Mattresses at Costco
Costco stocks several types of king size mattresses, each with unique features tailored to different sleep preferences. The primary categories include memory foam, hybrid, and innerspring mattresses.
Memory Foam Mattresses
Memory foam mattresses are known for their pressure-relieving properties and ability to contour to the body. They are ideal for side sleepers or those with joint pain. Costco offers memory foam options from brands like Tempur-Pedic and Novaform, which provide excellent support and motion isolation.
Hybrid Mattresses
Hybrid mattresses combine the support of innerspring coils with the comfort of memory foam or latex layers. These mattresses are versatile and suit a wide range of sleepers. Sealy and Stearns & Foster hybrids available at Costco offer balanced support and cooling features.
Innerspring Mattresses
Innerspring mattresses are traditional options with coil support systems, offering firmness and breathability. Costco carries innerspring models from brands like Sealy, which are durable and provide robust support for back and stomach sleepers.
Top King Size Mattress Deals at Costco in 2025
Here are some of the best king size mattress deals currently available at Costco, along with their key features and pricing.
| Brand | Model | Type | Price (USD) | Key Features |
|---|---|---|---|---|
| Tempur-Pedic | TEMPUR-Adapt | Memory Foam | $1,999 | Pressure relief, cooling technology |
| Sealy | Posturepedic Hybrid | Hybrid | $1,299 | Coil support, plush pillow-top |
| Novaform | ComfortGrande | Memory Foam | $899 | Gel-infused foam, affordable |
| Stearns & Foster | Rockwell | Hybrid | $1,599 | Luxury feel, durable construction |
Factors to Consider When Choosing a King Size Mattress
Selecting the right king size mattress involves evaluating several factors to ensure it meets your needs.
- Firmness Level: Choose based on your sleeping position (soft for side sleepers, firm for back/stomach sleepers).
- Material: Memory foam for contouring, hybrid for balance, innerspring for support.
- Budget: Costco offers options ranging from budget-friendly to premium.
- Warranty and Returns: Check Costco’s generous return policy and warranty terms.
Why Buy a King Size Mattress from Costco?
Costco provides several advantages when purchasing a king size mattress, including member-exclusive discounts, free delivery, and a satisfaction guarantee. Their mattresses are often sold at lower prices than competitors, and the bulk purchasing model ensures quality without compromising value.
For more information, visit Costco’s official website or check in-store availability. References: Tempur-Pedic , Sealy , Novaform .