Best Mailbox Locks In September 2026

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There is always a perfect Best Mailbox Locks out there in the market for you. However, you may not have the time and resources to try and research each of them in detail. So we’ve done the heavy lifting and are sharing below our detailed review of Top 10 Best Mailbox Locks.

To help you in your search, we have completed this list of the Best Mailbox Locks.

Top Rated Best Mailbox Locks Of 2026

Rank	Product Name	Score
1	Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands Buy Now	9.7 Buy Now
2	Wall Mount Lockable Mailbox - Modern Outdoor Galvanized Metal Key Large Capacity Buy Now	9.5 Buy Now
3	Kyodoled Key Lock Mail Boxes Outdoor,Locking Wall Mount Mailbox,Security Key Drop Box,12.59Hx 8.46Lx Buy Now	9.1 Buy Now
4	CompX USPS-L-1172C National Mailbox Lock New Style C9100 (Lock with 3-Keys) Buy Now	8.8 Buy Now
5	FJM Security 2400AS-KA Tubular Cam Lock with 5/8" Cylinder and Chrome Finish, Keyed Buy Now	8.6 Buy Now
6	CCL Security Products 82013 Multicam Mailbox, Includes Three Keys, Mounting Clip, Lock Washer Buy Now	8.3 Buy Now
7	Salsbury Industries 3590 Standard Replacement Salsbury Lock for Vertical Mailbox Door with Two Buy Now	8.1 Buy Now

1. Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands

• Durable, strong construction made of diecast with a nickel-plated face, this replacement lock is strong and durable, sure to last the test of time.
• Works for several brands this replacement mailbox lock works for several brands of mailboxes, including: american device, auth-florence, bommer, and miami carey.
• Replacement lock this multipurpose replacement mailbox lock is an easy fix and can easily replace lost or broken mailbox locks. this is a 5-pin tumbler lock.
• 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 its used.

2. Wall Mount Lockable Mailbox - Modern Outdoor Galvanized Metal Key Large Capacity

• Weatherproof: outdoor mountable mailboxes are made with high quality galvanized steel magnetic cover, black powder coated that locked mails from heavy rain and deliberate theft.
• Large capacity: the lockable wallmount mailbox duty are holding multi mailings, group mail, paperwork, newspaper, magazines, small parcel, package, and post office deliveries. this measures 8.3 x 10.0 x 2.7 (wxdxh).
• Easy installation: it has pre-drilled holes and mounting screw for solid attachment in the front porch of home or office. this is a universal mount mailbox in any walls or flat wall surface.
• Residential or office use: aesthetic posts, mounts vertical mailbox stylish look adds modern touch to exterior decor, front door house, commercial or business, classic rural and modern apartment. in terms of its locking security, mailbox has secure key lock with two reserved key locks that is not easy to duplicate.
• Decorative bin door slots: though drop box is lock, the slot can allow payments, parcels, outgoing mail and box packages to be inserted since it has an easy access metal flap like an old envelope mailbox. this is designed to prevent from fishing or stealing private property.

3. Kyodoled Key Lock Mail Boxes Outdoor,Locking Wall Mount Mailbox,Security Key Drop Box,12.59Hx 8.46Lx

• 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:12.59"x 8.46"x 3.34"
• 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.
• Secure design: the lockable wall mount mailbox is made of a strong metal with two keys, and it gives faster and more immediate access.
• Modern & stylish look: mail box with elegant and modern design , which is prefect to decorate the exterior of the house.metal wall-mounted mail box with transparent cover,you don't have to open mailbox to see if there's a letter inside.also, it is environmentally friendly paint, so it isn't harmful to the body.
• High-quality, durable: mailboxes for outside are made of strong steel and painted to effectively prevent rust, scratch-resistant ,this product will provide long-term durability and use for years .

4. CompX USPS-L-1172C National Mailbox Lock New Style C9100 (Lock with 3-Keys)

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

5. FJM Security 2400AS-KA Tubular Cam Lock with 5/8" Cylinder and Chrome Finish, Keyed

• Cam lock ships with two keys, a steel cylinder nut, stop cam, 1-1/4 cam and cam nut the tubular lock is constructed of zinc alloy and is chrome plated
• The fjm security tubular cam lock has a 5/8 cylinder length and can fit material thickness of up to 3/8 it is a standard size cam lock with 3/4 diameter
• Offers incredibly versatile installation options the cam can be installed on the lock at the 3, 6, 9 and 12 oclock positions and opens with a 90 degree turn
• Chrome tubular cam lock (sometimes called the ace cam lock) comes keyed alike with two keys per lock - each key will fit with each lock that you purchase
• Ships with a reversible stop cam and is available non-key retaining the key can be removed from the lock from the locked and unlocked position

6. CCL Security Products 82013 Multicam Mailbox, Includes Three Keys, Mounting Clip, Lock Washer

• Best used in apartments, condominiums, schools, lobbies, and pedestal-mounted neighborhood boxes
• Diecast
• Stainless steel dust shuttered keyway helps to prevent water penetration into the lock
• 90 degree clockwise cam turn to open
• Key is removable in locked position only
• Clockwise

7. Salsbury Industries 3590 Standard Replacement Salsbury Lock for Vertical Mailbox Door with Two

• Stainless steel
• Model number: 3590
• Corresponding key blanks (box of 50 keys) are available
• Available for commercial mailboxes and residential mailboxes