King and Cal King Mattresses for Sale

With Huge Savings, Our Mattresses Sell Fast!

Act Now to browse our Full Lineup!

BoxDrop Bismarck, ND

King and California King Mattresses

The King sized mattress is the largest standard mattress size within the industry, with the next size up, a non-standard California King. Both provide plenty of sleep space for you, your partner as well as children, pets and more! A King will fit just about anything!

We also provide California Kings and Split Kings for those who enjoy different sleeping preferences as their partner. This allows them to adjust their own settings without disturbing the sleep habits of their significant other.

Check out the King & California King mattresses we carry here at BoxDrop Bismarck!

SAVE up to 70% Off Retail Pricing!

See what customers have to say about us!

      EXCELLENT  
   Based on 649 reviews 
    
 
 
 
   
 
 
      Posted on Google  
   
   Michelle C. 
 8 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Great staff, products, and prices! Love that I can take home same day!
  
 
     Posted on Google  
   
   Josh E 
 3 October 2026
 
 
 Trustindex verifies that the original source of the review is Google. Great service and friendly people
  
 
     Posted on Google  
   
   Marlys Readel 
 29 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Looking for a mattress today. Great value.  Thanks so much.
  
 
     Posted on Google  
   
   Kay Lynn Sonsalla 
 24 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Friendly and knowledgeable.  Enjoyed our time.
  
 
     Posted on Google  
   
   Katie Ash 
 23 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. experience with BoxDrop! I purchased two chairs and the process was quick and easy. Great prices, friendly service, and I’m excited about my new chairs. Definitely recommend checking them out!
  
 
     Posted on Google  
   
   Penny Hetletved 
 21 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. There are few businesses at this point that have the customer service that Box Drop does. Refreshing and stellar.
  
 
     Posted on Google  
   
   Wendlin Piatz 
 19 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Wonderful customer service, great pricing.
Alex was extremely knowledgeable, not pushy, only helping us to find what was best for us.
  
 
     Posted on Google  
   
   Heather Nord 
 4 September 2026
 
 
 Trustindex verifies that the original source of the review is Google. Excellent customer service and options!
  
 
     Posted on Google  
   
   Hannah Jacob 
 28 August 2026
 
 
 Trustindex verifies that the original source of the review is Google. Thank you for a wonderful experience! We love our new bed and sectional! We can’t wait to get them home!
  
 
     Posted on Google  
   
   Megan PerDue 
 28 August 2026
 
 
 Trustindex verifies that the original source of the review is Google. 2nd time at BoxDrop and let’s just say BEST CUSTOMER EXPERIENCE EVER! Very helpful! Definitely my #1 place to shop for furniture! :)

More on our King & California King Mattresses

All our mattresses are first come first serve, so please give us a call or schedule a visit today to come in and sleep sample our King & California King Mattresses and take one home!

King Mattress Size: Width-76 in. by Length-80 in.

California King Mattress Size: Width-72 in. by Length-84 in.

The King Size Mattress is a whopping 16in. wider than a Queen Mattress! And the California King happens to be slightly narrower than a King (70in) but has 4 additional inches of length!

King Sized and Up Beds are perfect for Adjustable Beds and Frames & Hybrid/Cooling Beds, providing giving person their respective adjustable settings for sleeping position, as well as temperature.

Most King & California King beds are made from:

Foam / Memory Foam
Innerspring / Economy

BoxDrop Bismarck, ND carries various mattress brands for our customers to choose from, all severely discounted up to 70% Off Retail to pass the savings onto you!

Check out a few of the brands we carry:

Serta, Simmons, Royal Heritage and more!

When it comes to Mattresses there are a variety to choose from, that can lead to many questions on finding the perfect fit. We're here to help answer all those questions you have to help make your mattress choice as easy as possible! Learn more below!

FAQs Blogs

Delivery Services Available!

Help load your new product on site

Unload and carry inside the door at location

Mattress & Furniture Setup and Cleanup available upon request

Delivery Services Guaranteed and 100% Satisfaction!

Ready to Browse our Entire Selection?

Not every product is online and our in-store deals may be even better than what you see here. Visit our showroom to browse our entire Mattress & Furniture selection.

Brand New, In Plastic

Saving up to 70% OFF retail pricing DOESN'T mean cheap products! Pick up your Mattress & Furniture, brand-spanking-new.

Manufacturer Warranty

All products come with manufacturer warranties that won't keep you up at night. They provide peace of mind when browsing our mattress & furniture products.

Act Fast, for the Best Price!

Get the best Mattresses & Furniture - Always up to 70% off retail - but only while inventory lasts. Our stock sells fast so come take yours home today!

To get your Perfect Mattress & Furniture, simply...

Contact us

Call, text or message us today. We’re happy to chat about what you’re looking for before you visit our clearance center.

Pick one out

Explore the showroom and find the perfect mattress & furniture for you!

Get the Best Deal!

Always up to 70% Off and enjoy 90 Day/ no-credit financing deals.

Who We Are

Visit our About page or check out the resources below to learn more!

Our FAQs Our Blogs