A king single mattress typically costs $400-$2,200 in the U.S., with an average near $950; specialty 42-by-80-inch models can cost more because they are less widely stocked than standard sizes. Price depends on mattress type, thickness, brand, shipping, and whether the buyer chooses a close-fitting Twin XL instead of an exact king single.
In the U.S., “king single” is not a standard mattress-size label, so confirm the mattress dimensions before ordering.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| King single mattress | $400 | $950 | $2,200 | Special-order or imported 42-by-80-inch models |
| Foam mattress | $300 | $700 | $1,500 | Price varies by foam density and comfort layers |
| Hybrid mattress | $650 | $1,200 | $2,400 | Foam layers over a coil support system |
| Delivery and setup | $0 | $100 | $250 | May include room placement and old-mattress removal |
What a 42-by-80-inch king single mattress costs
A standard king single is commonly about 42 inches wide by 80 inches long, a size often sold in Australia but not routinely stocked by U.S. mattress retailers. A U.S. Twin XL is typically 38 by 80 inches: the same length but 4 inches narrower. A standard Twin is shorter, generally 38 by 75 inches.
For a true 42-by-80-inch mattress ordered in the U.S., shoppers can expect roughly $400-$2,200 for the mattress alone. The average is around $950 for a midrange foam or hybrid model with a basic comfort layer and a standard manufacturer warranty. Imported premium latex, pocket-coil, or custom-built products can exceed $2,500.
Check the actual width and length, not just the “king single” name, before buying. If a 38-inch-wide Twin XL fits the bed frame, many options are available for $250-$1,800, often with lower shipping charges and shorter delivery times. A frame made for a true 42-inch width may leave a gap around a Twin XL mattress.
Assumptions: U.S. online or specialty-retailer pricing for one mattress, before sales tax; delivery is listed separately.
How foam, coils, and delivery shape the quote
A mattress quote may include more than the sleep surface. Special sizing, delivery distance, removal, and optional setup can change the total. The table gives common ranges for an exact-size or special-order king single; overlapping amounts reflect different construction and service levels.
| Quote component | Low | Average | High | What changes the charge |
|---|---|---|---|---|
| Mattress materials and build | $350 | $850 | $2,000 | Foam, coils, latex, cover, and comfort layers |
| Special-size production | $0 | $100 | $350 | Custom cutting or limited-run dimensions |
| Freight or delivery | $0 | $90 | $220 | Distance, carrier, and delivery service level |
| Room-of-choice setup | $0 | $60 | $150 | Stairs, scheduling, and assembly arrangements |
| Old mattress removal | $0 | $50 | $120 | Local disposal rules and pickup availability |
| Taxes | $0 | $70 | $200 | Tax rate and mattress price |
Basic foam models usually cost less because their construction is simpler and shipping can be compact. A hybrid adds steel coils, edge support, and often more layers, while latex generally carries a higher material and manufacturing cost. Covers with cooling fibers or specialized fabrics may add $50-$200, but the feature’s value depends on personal preference and the mattress construction.
Delivery can be free for boxed mattresses, but that may mean the buyer carries the carton inside and handles setup. White-glove service is more likely to include room placement and packaging removal. Compare the delivered total and removal fee, not only the advertised mattress price.
Example labor estimate: a two-person delivery crew may spend 30-60 minutes placing a mattress; service is usually priced as a flat fee rather than by the hour.
Why mattress thickness and material change the price
Construction and dimensions are the largest product-price drivers. A 6-8-inch foam mattress may cost $300-$700 when available in a special size, while a 10-12-inch model with denser support foam often runs $500-$1,200. Thicker mattresses are not automatically more durable; foam density and coil quality matter more than height alone.
A hybrid with individually wrapped coils and multiple foam layers commonly costs $700-$1,600 for a king single size. Latex models may run $1,200-$2,500, particularly when made with natural latex or built to order. Budget memory foam models can fall below these ranges, but buyers should verify the listed size, return terms, and construction details.
Size can add a premium when the manufacturer does not make a 42-inch-wide model in volume. A custom surcharge of $100-$350 is plausible, and some brands may not accept returns on nonstandard dimensions. An added 2 inches of width can also require a matching mattress protector, sheets, or bed base, so the total purchase may exceed the mattress quote.
Firmness options and special features may add cost without changing the footprint. Pillow tops, zoned support, reinforced edges, and cooling covers can add approximately $50-$400 depending on the brand and whether they are part of a higher product tier. For price comparisons, match dimensions, construction, thickness, and return terms before comparing brand names.
Assumptions: prices describe a single mattress, not a bed frame, adjustable base, or bedding package.
How U.S. availability and delivery distance affect price
King single dimensions are less common in the U.S. than Twin XL, Queen, and King. Specialty retailers, importers, and custom mattress makers may stock or produce the size, but limited availability can mean longer lead times and higher freight charges. A locally stocked Twin XL is often less expensive overall, provided its narrower width works with the existing frame.
Urban shoppers may have more specialty sellers and delivery options, while rural addresses can face longer freight routes or limited white-glove service. Depending on seller and distance, delivery for a bulky mattress may be $50-$150 higher outside a normal service area. Regional labor rates and local taxes also affect the bill; these differences are usually smaller than the price gap between basic foam and premium latex.
Online sellers may include standard doorstep shipping in the listed price, but remote-area surcharges can apply. A specialty store may charge more upfront but provide room delivery or easier exchange handling. Ask whether a quoted freight amount includes inside delivery, stairs, packaging removal, and a scheduled appointment.
For a special-size order, confirm stock location and return shipping cost before paying. An inexpensive imported mattress can become a poor-value purchase if returning it requires freight to another state or country.
Three realistic king single mattress budgets
The examples below show how mattress type and service level change a buyer’s out-the-door budget. They assume a 42-by-80-inch mattress and exclude a bed frame; tax is estimated and varies by location.
| Purchase scenario | Mattress | Delivery and extras | Estimated total | Typical detail |
|---|---|---|---|---|
| Entry foam | $450 | $50 delivery + $35 tax | $535 | 8-inch foam, doorstep drop-off |
| Midrange hybrid | $1,050 | $120 setup + $85 tax | $1,255 | 11-inch hybrid, room placement |
| Premium latex | $1,850 | $200 delivery + $150 tax | $2,200 | 12-inch latex, scheduled delivery |
In the entry example, the buyer handles unpacking and setup. The hybrid example includes a delivery crew placing the mattress in the bedroom. The premium example reflects a specialty build and more costly freight; it does not imply that every latex mattress costs that much.
A Twin XL alternative could reduce the mattress portion of these budgets by $100-$500 or more, depending on brand and materials. That substitution only works if the bed frame, fitted sheets, and intended sleeping space accommodate a 38-inch width. Measure the frame’s inside dimensions and check its label before selecting the lower-cost size.
What setup, old-mattress removal, and special orders add
Doorstep delivery is often free or included, but bringing a mattress upstairs and placing it can cost $60-$150. Removal of an old mattress commonly adds $50-$120; some municipalities or buildings require separate disposal arrangements. Difficult stairs, narrow hallways, elevator reservations, or restricted delivery windows can lead to additional charges or make room delivery unavailable.
Custom orders deserve special attention. A retailer may require a deposit, quote a production period of several weeks, or exclude custom dimensions from its normal comfort-return policy. Ask whether the mattress is made to order, whether its cover can be removed, and whether the warranty applies to the full custom size. Confirm the policy in writing before purchase.
Some low-priced listings show only the mattress and add shipping at checkout. Other sellers include delivery but charge for old-bed removal or a narrow delivery window. Request an itemized quote that separates product, freight, setup, removal, and tax.
How long delivery and installation usually take
For a stocked boxed mattress, delivery commonly takes a few days to two weeks, depending on inventory and the carrier. A special-size mattress can take approximately two to eight weeks to manufacture and ship. These are planning ranges rather than guarantees; imported products may take longer when freight or customs schedules shift.
Unboxing and placing a mattress generally takes one or two people about 15-45 minutes, depending on its weight, packaging, and stairs. White-glove delivery can take longer because the crew must protect floors, navigate the home, and remove packaging. A mattress may need several hours to expand after unboxing, and some products require more time before reaching their intended shape.
Scheduling can affect price when a buyer needs a specific delivery date or rush service. Expedited freight may add $50-$200, while custom manufacturing may not be eligible for faster production. Allow time to measure the frame and order fitted bedding before the mattress arrives.
When a Twin XL or repair costs less
A Twin XL is generally the closest widely available U.S. substitute for a king single because both are about 80 inches long. Twin XL mattresses commonly cost $250-$1,800, with many mainstream foam and hybrid choices between $400 and $1,000. A true 42-inch-wide king single offers extra room, but the specialty-size premium may outweigh that benefit if the bed frame can be changed or already fits Twin XL.
Repair is rarely practical for a worn mattress with sagging support, but a damaged bed base or loose slats may be the real cause of discomfort. Tightening fasteners, replacing a broken slat, or correcting an uneven foundation may cost $20-$150 in materials or modest service work. A topper, often $80-$300, can adjust surface feel but will not restore a collapsed support core.
Before replacing a mattress, check whether the warranty covers a measurable defect and whether the foundation meets its conditions. A warranty may not cover normal softening, comfort preference, or damage from an incompatible base. Choose replacement when the support is worn; do not pay for a new mattress solely to correct a fixable frame problem.
Where to trim a king single mattress budget
First, establish whether the bed truly needs a 42-inch width. If a Twin XL fits, compare its delivered price with the special-size quote. If the wider size is essential, ask several sellers for the same dimensions, material type, thickness, delivery scope, and return policy so differences are meaningful.
Choose the construction that meets the required comfort and support rather than paying automatically for extra height, cooling claims, or decorative quilting. A well-specified 8-10-inch foam model may cost $350-$900, while a basic hybrid can be adequate in the $650-$1,100 range. Check density, coil details, and warranty exclusions instead of treating a higher price as proof of longer life.
Reduce service charges by measuring stairways and doorways, clearing the delivery route, and arranging a flexible delivery day. If local rules allow, compare retailer removal with municipal bulk pickup. Avoid ordering special bedding until the mattress dimensions are confirmed, since king single sheets may be difficult to exchange in U.S. stores.
The most reliable savings usually come from choosing a standard size when it fits, controlling delivery add-ons, and comparing like-for-like quotes. A low mattress price can lose its advantage when custom freight, nonreturnable sizing, or replacement bedding raises the final expense.