The Best Mailbox Locks

Looking for the best Mailbox Locks?

Discover now our comparison of the best Mailbox Locks. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Mailbox Locks are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Mailbox Locks in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.

SaleNo. 1

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

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

SaleNo. 2

CompX National C9100 USPS-L-1172C Mailbox Lock (Clockwise) (10 Pack)

New style C9100 USPS postal mailbox lock manufactured by Compx/National.

No. 3

Prime-Line MP4526 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – NA-14 Keyway, Opens Clockwise with 90º Rotation, Nickel Finish (1 Set)

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 NA14 key
WORKS FOR SEVERAL BRANDS – This replacement mailbox lock works with several brands of mailboxes, including: Auth-Electric, Bommer, Cutler-Federal, Florence and Superior.
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 clockwise direction and features a dust cover and a retaining clip

SaleNo. 4

Prime-Line U 9940 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – Brass Finish, ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation (1 Set)

REPLACEMENT LOCK – The U 9940 multipurpose replacement mailbox lock is an easy fix and can easily replace lost or broken mailbox locks. This is a 5-pin tumbler lock.
WORKS FOR SEVERAL BRANDS – This replacement mailbox lock works for 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.
DURABLE, STRONG CONSTRUCTION – Made of diecast with a brass-plated face, this replacement lock is strong and durable, sure to last the test of time.

SaleNo. 5

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

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

No. 6

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

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.

No. 7

Prime-Line MP4573 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – NA-14 Keyway, Opens Counter-Clockwise with 90º Rotation, Nickel Finish (1 Set)

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

No. 8

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

✅ 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.

SaleNo. 9

Prime-Line MP4946 Mailbox Lock, 1-9/16 In. Cam Reach, Diecast Construction, Nickel (Single Pack)

Used to replace damaged or missing mailbox locks by Cutler Federal
This mailbox lock mounts with a spring steel locking clip, included with item
This mailbox lock rotates in a counter clockwise direction to lock
Diecast construction with brass pins and a nickel plated face
Can eliminate stocking of individual locks
1-9/16 inch reach of cam
No tools are required for installation
Please refer to the line art drawing for dimensions and compare with your needs before ordering

No. 10

Mailbox Lock Replacement with 2 Keys - Universal Fit for Post Office Boxes, ILCO 1003M Keyway, 90° Counter-Clockwise Rotation, Nickel Finish - Compatible with Most Brands (1-Pack)

Mailbox Lock Replacement Kit - Solve broken keys or worn-out mechanisms effortlessly. This universal mailbox lock replacement includes 2 keys (Hudson 1003M keyway) and 5 adjustable cams for seamless installation.
Designed to meet post office mailbox lock standards. Security clip prevents key removal until fully locked – ideal for high-traffic community mailboxes.
Universal Fit for Most Mailboxes - Compatible with 90% of residential and commercial boxes. Perfect for mailbox key lock replacement on American Device, Bommer, and Miami-Carey units.
Counter-Clockwise Unlocking System - Turn keys left 90° to unlock (industry-standard rotation). Hex nut design eliminates tools for quick mailbox key replacement – repairs take under 3 minutes.
All-Weather Durable Build - Nickel-plated mailbox lock resists rust and extreme temperatures. Zinc cams withstand forced entry attempts, protecting packages and sensitive mail.

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We do everything we can to offer you relevant comparisons, based on various criteria and constantly updated. The product you are looking for is probably among these pages. A few clicks will allow you to make a fair and relevant choice. Don’t be disappointed with your purchases made on the Internet and compare the best Mailbox Locks now!

Last update on 2025-07-08 / Affiliate links / Images from Amazon Product Advertising API

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