Skip to content

Best Cluster Mailboxes of 2026

Harry Stack Avatar
Harry Stack

Last Updated:

Save
Share

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Cluster mailboxes are a convenient and secure way to receive mail in residential areas, apartment complexes, and commercial buildings. These mailboxes are designed to hold multiple mailboxes in one unit, providing a central location for mail delivery and pickup. They are made from durable materials such as aluminum, steel, and plastic and come in various sizes and styles to meet different needs. Cluster mailboxes are also USPS-approved, ensuring that mail is delivered safely and efficiently. They are an excellent solution for those looking for a convenient, secure, and cost-effective way to receive mail.

At a Glance: Our Top Picks

Salsbury Industries 3504ARU Vertical Mailbox Cover #TOP 1

Salsbury Industries 3504ARU Vertical Mailbox

9.8
Read Review
Salsbury Industries Aluminum Surface Mounted Vertical Mailbox Cover #TOP 2

Salsbury Industries Aluminum Surface Mounted Vertical Mailbox

9.7
Read Review
Salsbury Industries 3503ARU Vertical Mailbox Cover #TOP 3

Salsbury Industries 3503ARU Vertical Mailbox

9.5
Read Review

Top 10 Cluster Mailboxes

#TOP 1

Salsbury Industries 3504ARU Vertical Mailbox

Salsbury Industries 3504ARU Vertical Mailbox Cover

Salsbury Industries 3504ARU Recessed Mounted Vertical Mailbox with 4 Doors and USPS Access, Aluminum

The Salsbury Vertical Mailbox is designed to offer a durable and secure mail storage solution. Its doors and trim feature a textured finish that helps prevent scratches, keeping the mailbox looking new over time. Each door is equipped with a 5-pin cylinder cam lock, providing you with reliable security and comes with two keys for convenience. You can choose from various sizes with compartments ranging from three to seven, allowing you to pick the right size for your needs. This mailbox also includes USPS access for easy mail delivery and collection, making it a practical choice for shared mail areas.

9.8
FTB Score
Buy on Amazon Find on eBay Find on Walmart

What We Like

  • Scratch-resistant finish
  • Secure cam locks
  • Multiple compartment options
  • USPS access included
#TOP 2

Salsbury Industries Aluminum Surface Mounted Vertical Mailbox

Salsbury Industries Aluminum Surface Mounted Vertical Mailbox Cover

Salsbury Industries 3504ASU Surface Mounted Vertical Mailbox with 4 Doors and USPS Access, Aluminum

The Salsbury Industries Aluminum Surface Mounted Vertical Mailbox is designed with striated doors and trim to resist scratching. It includes a 5 pin cylinder cam lock with 2 keys and 4 mailbox compartments. This cluster mailbox requires installation of a U.S.P.S. master arrow lock, which can be provided and installed by the local postmaster.

9.7
FTB Score
Buy on Amazon Find on eBay Find on Walmart

What We Like

  • Scratch-resistant striated doors and trim
  • 5 pin cylinder cam lock with 2 keys
  • 4 mailbox compartments
#TOP 3

Salsbury Industries 3503ARU Vertical Mailbox

Salsbury Industries 3503ARU Vertical Mailbox Cover

Salsbury Industries 3503ARU Recessed Mounted Vertical Mailbox with 3 Doors and USPS Access, Aluminum

The Salsbury Industries 3503ARU Vertical Mailbox is a high-quality mailbox designed for convenient and secure mail storage. With its striated doors and trim, this mailbox is resistant to scratching, ensuring long-lasting durability. Each door is equipped with a 5 pin cylinder cam lock, providing added security for your mail. The mailbox is available with 3 to 7 compartments, allowing for efficient organization of your mail. The Salsbury Vertical Mailbox offers a sleek and stylish design, perfect for any home or office. Its scratch-resistant features, secure locking system, and multiple compartments make it a practical and convenient choice for all your mailing needs.

9.5
FTB Score
Buy on Amazon Find on eBay Find on Walmart

What We Like

  • Scratch-resistant
  • Secure locking system
  • Multiple compartments
#TOP 4

Salsbury Industries 3308BLK-U Cluster Box Unit

Salsbury Industries 3308BLK-U Cluster Box Unit Cover

Salsbury Industries 3308BLK-U 8 A Size Doors, United States Postal Access Type I Cluster Box Unit, Black

The Salsbury Industries 3308BLK-U Cluster Box Unit includes 8 "A" size doors, 2 parcel lockers, and a matching pedestal. Each door has a heavy duty 5 pin cylinder cam lock with a dust/rain shield and 3 keys. The unit also has a carrier access door for U.S.P.S. installed master lock.

9.4
FTB Score
Buy on Amazon Find on eBay Find on Walmart

What We Like

  • 8 total compartments with "A" size doors
  • 2 parcel lockers with different sizes
  • Heavy duty cam lock with 3 keys for each door
#TOP 5

Salsbury Industries 3506ASU Surface Mounted Vertical Mailbox

Salsbury Industries 3506ASU Surface Mounted Vertical Mailbox Cover

Salsbury Industries 3506ASU Surface Mounted Vertical Mailbox with 6 Doors and USPS Access, Aluminum

The Salsbury Industries 3506ASU Surface Mounted Vertical Mailbox is a scratch-resistant mailbox with 6 doors and USPS access. Each door includes a lock and 2 keys. With a choice of 3 to 7 compartments, the mailbox is perfect for both residential and commercial use. The individual compartment size of 5-1/2 inches W x 16-1/4 inches H x 6-3/4 inches D is ideal for small to medium-sized packages.

9.4
FTB Score
Buy on Amazon Find on eBay Find on Walmart

What We Like

  • Scratch-resistant
  • Lockable doors with keys
  • Multiple compartments to choose from
#TOP 6

Salsbury 3316SAN-U Cluster Box Unit

Salsbury 3316SAN-U Cluster Box Unit Cover

Salsbury Industries 3316SAN-U 16 A Size Doors, United States Postal Access Type III Cluster Box Unit, Sanstone

The Salsbury Cluster Box is designed with convenience in mind. It features a dedicated compartment for outgoing mail, complete with a protective flap to keep your mail safe from the weather. The mail slot is wide enough to easily accommodate your letters and small packages. For secure deliveries, it includes a carrier access door that works with a USPS master lock, ensuring only authorized personnel can access the mail. Additionally, you have the option of one or two integrated parcel lockers, perfect for receiving larger packages securely. This unit is ideal for keeping your mail organized and protected.

9.3
FTB Score
Buy on Amazon Find on eBay Find on Walmart

What We Like

  • Outgoing mail compartment
  • Weather protection flap
  • Carrier access door
  • Integrated parcel lockers
#TOP 7

Salsbury Industries 3503ASU Vertical Mailbox

Salsbury Industries 3503ASU Vertical Mailbox Cover

Salsbury Industries 3503ASU Surface Mounted Vertical Mailbox with 3 Doors and USPS Access, Aluminum

The Salsbury 3503ASU Mailbox offers a durable and secure solution for your mail needs. Its doors and trim have a textured finish that helps prevent scratches, keeping the mailbox looking good over time. Each door is equipped with a 5-pin cylinder cam lock, providing you with reliable security and two keys for easy access. This model is designed with three compartments, but you can choose options with more if needed. Plus, it includes USPS access, making mail delivery convenient for both you and your postal carrier.

9.2
FTB Score
Buy on Amazon Find on eBay Find on Walmart

What We Like

  • Scratch-resistant finish
  • Secure 5-pin cam locks
  • Multiple compartment options
  • USPS access included
#TOP 8

Salsbury Industries Pedestal Mailbox with 12 Compartments and USPS Access

Salsbury Industries Pedestal Mailbox with 12 Compartments and USPS Access Cover

Salsbury Industries 3312SAN-U Cluster Box Unit with Pedestal, 12 A Size Doors Type II Sandstone and USPS Access

This Salsbury Industries cluster mailbox comes with 12 compartments, each with an "A" size door measuring 12-3/4" W x 3-1/8" H, as well as a small parcel locker measuring 12" W x 10" H. The mailbox also includes a matching pedestal and a carrier access door for the installed master lock, making it easy for U.S.P.S mail carriers to access. This Type II mailbox is designed for outdoor use and has a sandstone finish.

9.1
FTB Score
Buy on Amazon Find on eBay Find on Walmart

What We Like

  • 12 compartments for ample storage space
  • Includes a parcel locker for small packages
  • Matching pedestal included for easy installation
#TOP 9

Salsbury Industries 3507SSU 7-Door Vertical Mailbox

Salsbury Industries 3507SSU 7-Door Vertical Mailbox Cover

Salsbury Industries 3507SSU Surface Mounted Vertical Mailbox for use with USPS Lock, 7 Doors, Sandstone

The Salsbury 7-Door Mailbox is designed to meet USPS standards, ensuring it is reliable and suitable for official mail delivery. Each compartment offers a spacious size of 5-1/2" wide by 16-1/4" high and 6-3/4" deep, giving you enough room to securely hold your mail and small packages. The mailbox features individual doors equipped with 5-pin cylinder cam locks, providing secure access to your mail with two keys included for convenience. This surface-mounted vertical design is practical for easy installation and ideal for multi-user locations.

9.0
FTB Score
Buy on Amazon Find on eBay Find on Walmart

What We Like

  • USPS-compliant design
  • Spacious compartments
  • Secure cam locks
  • Two keys per lock
  • Surface-mounted installation
#TOP 10

Salsbury Industries Vertical Mailbox with 5 Doors

Salsbury Industries Vertical Mailbox with 5 Doors Cover

Salsbury Industries 3505ARU Recessed Mounted Vertical Mailbox with 5 Doors and USPS Access, Aluminum

This mailbox by Salsbury Industries has 5 recessed mounted doors and is designed for USPS access. Made in the US, it comes with padlocks and security equipment for added protection. It falls under the cluster mailbox category.

8.9
FTB Score
Buy on Amazon Find on eBay Find on Walmart

What We Like

  • Recessed mounted with 5 doors
  • USPS access
  • Comes with padlocks and security equipment

Frequently Asked Questions (FAQs)

1. Does USPS provide cluster mailboxes?

Yes, USPS provides cluster mailboxes to customers. Each customer is given a compartment lock and three keys for their postal-owned Cluster Box Unit (CBU). There is no key deposit required, and customers can duplicate their keys at no expense to USPS.

2. Why do new homes have cluster mailboxes?

New homes often have cluster mailboxes because they offer increased security compared to traditional roadside mailboxes. Each tenant has a unique key to unlock their mailbox, and the cluster mailboxes have USPS-approved safety features to prevent mail theft. Additionally, cluster mailboxes allow for efficient USPS delivery.

3. Who decides on cluster mailboxes?

The responsibility of cluster mailboxes typically lies with the property manager or the community's Homeowners Association (HOA). They are in charge of regular upkeep and maintenance, including cleaning, paint touch-ups, repairing broken parts, and replacing mailbox units when necessary.

4. Does Amazon deliver to cluster mailboxes?

No, Amazon does not deliver to cluster mailboxes. USPS is the only package delivery service that uses cluster mailboxes. Other delivery services like FedEx, UPS, and Amazon deliver packages directly to the address specified on the mail piece, such as the front door of the recipient's home.

5. How much does it cost to install a cluster mailbox?

The cost of installing a cluster mailbox can vary. Prices range from around $1,000 for a unit with four doors and one or two parcel lockers, to approximately $2,200 for units with up to twenty doors. Additional pedestal parcel lockers may cost slightly less. It's important to consider other costs associated with installation as well.

6. How does USPS deliver to cluster mailboxes?

USPS delivers to cluster mailboxes using a proprietary Arrow lock. The postal carrier opens the entire front panel of the unit with this key, providing access to all individual mailboxes. USPS is responsible for installing and maintaining the Arrow locks.

7. How do mailmen open cluster mailboxes?

Mail carriers have a master key with an Arrow Lock that allows them to open all compartments at once. After delivering the mail, the carrier locks the CBU and each tenant retrieves their mail from their individual mailbox compartment and packages from the parcel lockers using their respective keys.

8. How are packages delivered to cluster mailboxes?

If a package is too large for a tenant's mailbox, the carrier places it in a parcel locker. A designated key for that locker is placed in the tenant's mailbox. The postal carrier then closes and securely locks the front panel door of the cluster mailbox unit.

Editor's Notes

During our cluster mailboxes research, we found 24 cluster mailboxes products and shortlisted 10 quality products. We collected and analyzed 7,130 customer reviews through our big data system to write the cluster mailboxes list. We found that most customers choose cluster mailboxes with an average price of $1,633.21.

The cluster mailboxes are available for purchase. We have researched hundreds of brands and picked the top brands of cluster mailboxes, including Salsbury Industries and more. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

Written by

Harry Stack Avatar

Harry Stack

Harry Stack owns a small hardware store, his career landed him a depth of knowledge in categories such as tools, equipment, machinery and hardware. In his spare time, he usually repairs furniture, safes and appliances, and he knows how to make simple repairs to plumbing or electrical fixtures. His hobbies also include woodworking and fishing.