Quick Answer
Costco Canada carries mattresses in twin (38"x75"), double/full (54"x75"), queen (60"x80"), and king (76"x80"). Not every model is available in every size. Twin and double selections are more limited, while queen has the widest selection.
Brad, Owner since 1987: "We have been helping Brantford families sleep better since 1987. Every customer gets personal attention, honest advice, and the kind of follow-up service you just do not get from big box stores."
Choosing the right mattress size seems straightforward until you realize that not every size is available in every model, and the price jump between sizes varies widely depending on where you shop. Here's everything Canadian shoppers need to know about mattress sizes at Costco and beyond.
Standard Canadian Mattress Sizes
| Size | Dimensions | Best For | Minimum Room Size |
|---|---|---|---|
| Twin | 38" x 75" | Children, single adults, guest rooms | 7' x 10' |
| Twin XL | 38" x 80" | Taller single adults, split king setups | 7' x 10' |
| Double/Full | 54" x 75" | Single adults wanting more space, teens | 9' x 10' |
| Queen | 60" x 80" | Couples, single adults wanting space | 10' x 10' |
| King | 76" x 80" | Couples wanting maximum space, families | 12' x 12' |
| California King | 72" x 84" | Taller couples (6'+ individuals) | 12' x 12' |
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Canadian vs American Sizing
Canadian mattress sizes are identical to American standard sizes. A Canadian queen (60" x 80") is the same as an American queen. However, IKEA uses European sizing, which is slightly different, so if you're shopping across retailers, double-check dimensions.Costco Mattress Size Availability in Canada
| Brand | Twin | Double | Queen | King | Cal King |
|---|---|---|---|---|---|
| Sealy | Limited | Limited | Yes | Some models | Rare |
| Beautyrest | Rare | Some | Yes | Yes | Rare |
| Novaform | Some | Some | Yes | Yes | Online only |
| Casper | Rare | Some | Yes | Some | Rare |
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Costco Size Limitations
Queen is the most reliably available size across all brands. If you need a twin, double, or king, your model options shrink significantly. In-warehouse selection is even more limited than online, many Costco locations only display 3-5 mattress models in person.Costco Mattress Pricing by Size
| Size | Costco Price Range | Restonic ComfortCare |
|---|---|---|
| Twin | $250-$600 | $875 (690 coils) |
| Double | $350-$800 | $950 (980 coils) |
| Queen | $400-$1,500 | $1,125 (1,222 coils) |
| King | $600-$2,200 | $1,455 (1,440 coils) |
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How to Choose the Right Size
Brad, our senior consultant at Mattress Miracle, walks every customer through size selection: "Most couples think they want a queen because that's the default. But when I show them the actual per-person sleeping width, just 30 inches per side on a queen versus 38 inches on a king, many switch to king. That extra 8 inches per person makes a huge difference for sleep quality."
Size Selection Guidelines
- Single adult under 6' Twin works for tight spaces; double is more comfortable
- Single adult 6'+ Twin XL or double minimum; queen is ideal
- Couple Queen is the minimum; king is recommended if room allows
- Couple with children or pets King is strongly recommended
- Guest room Double or queen covers most guest situations
Costco vs Mattress Miracle: Size Availability
| Factor | Costco | Mattress Miracle |
|---|---|---|
| Available sizes | Twin, Double, Queen, King (varies by model) | Twin, Double, Queen, King (all models, all sizes) |
| Size consistency | Not all models in all sizes | Every Restonic model in every standard size |
| Size guidance | Self-service | Expert recommendation based on room and sleep style |
| In-store testing | Limited models on display | Full showroom testing in your preferred size |
| Delivery | Self-transport or basic shipping | White glove delivery and setup |
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Frequently Asked Questions
Canadian mattress sizes follow specific standards, and Costco carries the most common sizes while often omitting specialty dimensions. Mattress Miracle at 441½ West Street in Brantford carries the full range of Canadian mattress sizes from twin to king, including less common options like twin XL and California king. Dorothy recommends measuring your bed frame and bedroom before shopping, as size upgrades require adequate room clearance and matching bedding. Call (519) 770-0001 for size guidance specific to your bedroom layout.
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We are a family-owned mattress store in Brantford, helping our community sleep better since 1987. Come try mattresses in person and get honest, no-pressure advice.
441 1/2 West Street, Brantford, Ontario
Call 519-770-0001What mattress sizes does Costco carry in Canada?
Costco Canada typically carries twin, double/full, queen, and king mattresses. However, not every model comes in every size. Queen has the widest selection across all brands. Twin and double options are more limited, especially in-warehouse. California king is rare and usually online-only.
Is a double the same as a full-size mattress?
Yes. In Canada, "double" and "full" refer to the same mattress size: 54" x 75". The term "double" is more commonly used in Canada, while "full" is the American designation. Both terms appear in Costco's listings depending on the brand.
What's the most popular mattress size in Canada?
Queen (60" x 80") is the most popular mattress size in Canada, accounting for roughly 45% of all mattress sales. It's the standard for couples and single adults who want generous sleeping space. King is growing in popularity as Canadian master bedrooms get larger.
Can a queen mattress fit through a standard doorway?
A queen mattress (60" x 80") can fit through most standard Canadian doorways (which are typically 32-36 inches wide) when turned on its side. The difficulty depends on hallway width and corners. King mattresses are harder to navigate. Mattress-in-a-box options from Costco are easier to transport since they're compressed.
Does Costco sell twin XL mattresses?
Costco has limited twin XL availability, mostly online through costco.ca. Twin XL (38" x 80") is 5 inches longer than standard twin and is used for split king configurations and taller individuals. Availability varies by season and brand.
Should couples get a queen or king mattress?
A king gives each partner 38 inches of sleeping width versus 30 inches on a queen. If your bedroom is at least 12' x 12', a king is the better choice for sleep quality. If space is tight, a queen works but you may notice more partner disturbance. Visit Mattress Miracle to test both sizes and see the difference.
Visit Our Brantford Showroom
Mattress Miracle
441 1/2 West Street, Brantford
Phone: (519) 770-0001
Hours: Mon-Wed 10-6, Thu-Fri 10-7, Sat 10-5, Sun 12-4
Our team has 38 years of experience helping customers find the right sleep solution. Call ahead or walk in any day of the week.
Sources
- Radwan A, Fess P, James D, et al. Effect of different mattress designs on promoting sleep quality, pain reduction, and spinal alignment in adults with or without back pain. Sleep Health. 2015;1(4):257-267. DOI: 10.1016/j.sleh.2015.08.001
- Verhaert V, Haex B, De Wilde T, et al. Ergonomics in bed design: the effect of spinal alignment on sleep parameters. Ergonomics. 2011;54(2):169-178. DOI: 10.1080/00140139.2010.538725
- Okamoto-Mizuno K, Mizuno K. Effects of thermal environment on sleep and circadian rhythm. J Physiol Anthropol. 2012;31(1):14. DOI: 10.1186/1880-6805-31-14
- Cary D, Briffa K, McKenna L. Identifying relationships between sleep posture and non-specific spinal symptoms in adults: A scoping review. BMJ Open. 2019;9(6):e027633. DOI: 10.1136/bmjopen-2018-027633
Visit Our Brantford Showroom
We are located at 441½ West Street in downtown Brantford. Free parking available. Our team does not work on commission, so you get honest advice based on your needs.
Mattress Miracle , 441½ West Street, Brantford, ON · (519) 770-0001
Hours: Monday–Wednesday 10am–6pm, Thursday–Friday 10am–7pm, Saturday 10am–5pm, Sunday 12pm–4pm.