Top 10 Best mailbox lock and key in 2026

Last Updated - 6/10/2026

🏆Best Choice

KYODOLED

KYODOLED Key Lock MailBoxes for Outside, Locking Wall Mount Mailbox, Security Key Drop Box for Letters Newspapers, Cards, 12.4H x 8.54L x 3.35W Inches, Black

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•High-Quality: Mailboxes for Outside are made of strong steel and painted to effectively prevent rust, scratch-proof, this product will provide long-term durability and use for years
•Secure Design: The lockable wall mount mailbox is made of a strong metal with two keys, and it gives faster and more immediate access
•Large Capacity: Mail box fits hold multiple letters, newspapers, emails, etc., and also can accommodate letters from the family for a period of time. Size:12.4"x 8.54"x 3.35"
•Easy Installation: Mail drop box has pre-drilled holes, mounting screws and simple 3 steps installation instructions. You can install it according to the instructions. It is simple and quick
•Modern & Stylish Look: Mail box with elegant and modern design , which is good to decorate the exterior of the house. Metal wall-mounted mail box with transparent window in front, You don't have to open mailbox to see if there's a letter inside

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$25.99

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PRIME-LINE

Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation, Nickel Finish (1 Set)

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•REPLACEMENT LOCK – This multipurpose Prime-Line replacement mailbox lock is an easy fix and can easily replace lost or broken mailbox locks. Features 5 cams and an Hudson 1003M key
•WORKS FOR SEVERAL BRANDS – This replacement mailbox lock works with several brands of mailboxes, including: American Device, Auth-Florence, Bommer, and Miami-Carey.
•INCLUDES – Replacement lock kit includes a total of 5 zinc-plated steel cams, brass pins, a spring steel locking clip and 2 keys.
•LOCKING SECURITY FEATURE – This lock has a security feature that prevents the key from being removed when in the unlocked position, which prevents forgetting the key, and ensuring the mailbox is locked every time it’s used.
•NOTE – This mailbox lock unlocks by turning the included keys in a in the counter-clockwise direction and has a retaining hex nut and retaining clip

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$9.77

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VIXAVI

Mailbox Lock Replacement - Universal Mailbox Locks with 4 Keys - Easy to Install Mail Box Lock and Key Set - Durable and Secure Lock Replacement with 4 Keys for Almost All Locking Mail Boxes

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•✅ Universal Mailbox Lock: Now you don't have to replace your entire mailbox to add an extra layer of security. Our mailbox replacement lock is carefully engineered to fit any mailbox size or type, and comes with 4 keys and five different sizes of locks.
•✅ Quick & Fuss-Free Installation: No handyman skills? No problem! You can quickly install your new mailbox lock set yourself in minutes without complex tools or professional help. Upgrade your mailbox's security and enjoy that much-needed peace of mind.
•✅ The Last Mailbox Lock You Will Ever Need: Built with reliability and long-term durability in mind, our rust-resistant mailbox key lock will handle daily wear and tear without skipping a beat, ensuring your mailbox remains functional for years to come.
•✅ Protecting Your Mail Has Never Been Easier: Prevent theft or unauthorized access to your mail with our secure mailbox lock, which is both skid- and destruction-resistant. Keep your private documents and deliveries safe with an ultra-secure mail box lock.
•✅ Sleek & Modern Design: Boasting a modern aesthetic that combines style and functionality, this mailbox lock replacement kit will take your mailbox's overall appearance to the next level. Add a touch of elegance to your mailbox today with our stylish mailbox lock.

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$9.99

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xydled

xydled Mail Boxes with Key Lock,Locking Mailbox Wall Mounted,Security Mailbox with Lock and Key,Large Capacity,Steel Cover Metal Postbox for House,14.2X 4X 12.6 Inch, Black

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•DURABLE MATERIAL - Made of solid and sturdy metal, provides high security protection and safety storage for your mail. Powder coated protect mails from heavy rain. Surface all spray model or baking varnish disposal, beautiful and modern, endure cauterization.
•CONVENIENT VIEW WINDOW - Make it easy for you to check your mail, notes, votes or money.
•SECURE LOCK - Be equipped with the independent key lock, both firm and sumptuous.
•EASY INSTALLATION - Mail Drop Box has pre-drilled holes, mounting screws, gaskets, wall anchors, everything you need for installation is in the box. Note: The mailbox has seams and will seep water during heavy rain, so it is recommended to install it indoors or outdoors with a sheltered shed.
•ALL-WEATHER SERVICE - We will continue to uphold the positive, enthusiastic, sincere, pragmatic spirit of enterprise to provide you with all-weather service.
•SIZE - 14.2 X 12.6 X 4 Inch

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$37.99

$39.99

-5%

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COMPX NATIONAL

CompX USPS-L-1172C National Mailbox Lock C9100 (Lock with 3-Keys)

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Includes spring clip, mounting nut and (3) keys
•Does not include cam/latch
•C9100 operates clockwise

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$20.99

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PRIME-LINE

Prime-Line S 4573 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – NA-14 Keyway, Opens Counter-Clockwise with 90º Rotation, Nickel Finish (1 Set)

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•REPLACEMENT LOCK – This multipurpose Prime-Line replacement mailbox lock is an easy fix and can easily replace lost or broken mailbox locks. Features 5 cams and an NA-14 key
•WORKS FOR SEVERAL BRANDS – This replacement mailbox lock works with most brands of mailboxes.
•BUILT TO LAST – The mail box lock and key set is constructed of diecast, brass, steel, and stamped steel materials; the steel components come finished in a corrosion-resistant zinc-plated finish; the cylinder face comes in a nickel-plated finish
•LOCKING SECURITY FEATURE – This lock has a security feature that prevents the key from being removed when in the unlocked position, which prevents forgetting the key, and ensuring the mailbox is locked every time it’s used.
•NOTE – This mailbox lock unlocks by turning the included keys in a in the counter-clockwise direction and has a retaining hex nut and retaining clip

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$7.47

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goldenwarm

goldenwarm Keyed Different, Mailbox Cam Lock 5/8" Cylinder, Cabinet Cam Lock Secured File Cabinet Lock with Keys Toolbox Lock Zinc Alloy Drawer Locks and Key, Satin Nickel Finish, 1 Pack

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Basic Info: Zinc Alloy Material with Satin Nickel Finish, 5/8" cylinder length, 3/4" diameter, it can fit maximum 0.55'' panel thickness.
•Signature Features: The surface is specifically manufactured with Electroplating Coatings. They are tough enough to use for long time. The Keyed-Different feature also make sure the security of files, letters and other documents you want to lock with secret and privacy.
•Easy to Adjust: Follow the instruction shown in the picture, with the hardware we provided in the package, you can easily install the cam lock within few minutes.
•Package Inclusion: A set of lock comes with 1 cylinder, 3 latches and 2 keys.
•One-Year Warranty: We only sell the great product for reasonable price. You can Enjoy the benefits of our proud customer services, if you have any issue or inquiry, please feel free to contact us ANYTIME!

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$6.99

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Yandino

Mailbox Lock Replacement with 4 Keys - Multipurpose Mail Box Locks Compatible with Almost All Brands - Universal Lock Pick Set - File Cabinet Lock - Easy to Install - Durable and Secure

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Multipurpose Mailbox Lock: Enhance your mailbox security without replacing the entire mailbox.Our mailbox locks with keys replacement is designed to fit various mailbox sizes and types, complete with 4 keys and 5 different cams for a perfect fit.
•Mailbox Lock Replacement:You can install your new mailbox lock set in minutes, all by yourself, without the need for complicated tools or professional assistance.
•Mail box lock and key –This Replacement lock kit i a total of 5 zinc-plated steel cams, brass pins, a spring steel locking clip and 4 keys.UThis mail box lock and key unlocks by turning the included keys in a in the counter-clockwise direction. It can double as an office filing cabinet lock. For exact dimensions, refer to our detailed product images.
•Durable & Reliable: Constructed for longevity and reliability, our rust-resistant mailbox lock can withstand daily use, ensuring your mailbox remains secure and functional for years.
•Enhanced Mail Protection: Safeguard your mail from theft and unauthorized access with our secure mailbox lock. Its skid-resistant and destruction-resistant features help keep your important documents and deliveries safe.

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$8.49

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QBXMY7

2 PCS Mailbox Locks, Mailbox Lock 16 mm, Comes with 4 Different Lock Plates, Security Mailbox Lock, cam Lock, Lever Lock, Lever Lock for mailboxes, Cupboard Doors

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Premium material: the cam locks keyed alike is made of excellent metal material made of zinc alloy, which is wear-resistant, corrosion and rust resistant, sturdy and durable for long time use.
•Easy to install: easy to install. Simply drill a hole in suitable place, insert lock head, fix tongue with fixing screw. Can be installed on metal, wood, doors, drawer panels, etc.
•Safe and reliable: the toolbox locks with keys provides you with sufficient security. Help protect privacy, assets and important materials and provide you with a safe personal space.
•Wide applications: suitable for sliding doors, cabinets, drawers, tool boxes, filing cabinets, mailboxes, furniture, RV compartments, vehicles and more. Drawer locks with keys are an extra security for important small items like documents.
•Versatile design: with 16mm cylinder length and strike plate, it can be adjusted to material thicknesses up to 12mm. This is a standard size lever lock with a diameter of 18 mm. Each mailbox lock is equipped with two identical keys to prevent one of them from being lost.

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$6.88

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PRIME-LINE

Prime-Line MP4945 Mail Box Lock, 5-Cam, 5-Pin, 13/16 In. Threaded, Counter-Clockwise (Single Pack)

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Diecast construction
•Nickel plated face
•Counter-clockwise rotation
•Spring steel locking clip
•Can eliminate stocking of individual locks

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$20.99

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Our team evaluates this data alongside genuine user feedback, merging AI analysis with human insights to provide you with real-time, highly-rated recommendations that empower your decision-making with clarity and confidence.