Mailbox Sizes: How to Find the Right Size for Your Needs
Fit all your letters and packages with ease.
Picking the right mailbox size can be confusing. Whether you are looking to update your current residential mailbox or you run a small business and need a larger spot for packages and orders, this guide on the various mailbox dimensions will help you choose the right one for your needs.
Mailbox Dimensions & Sizes
There are four standard mailbox sizes to consider when selecting the best one for your intended usage. Consult the mailbox size chart above, or keep reading below to learn more about each size and how much mail they can hold. If you're not sure which mailbox type is best suited for your household needs, check out our Mailbox Buying Guide.
Small Mailbox Dimensions
Smaller mailboxes are perfect for residences that don't typically receive a lot of mail. If you check your mailbox daily, don’t have a lot of subscriptions coming to your home, and only receive the occasional letter from time to time, a small mailbox is the right size for you. These types of mailboxes can be installed as a wall-mount option or on a post at the end of your driveway. Small mailboxes are around 12" tall and range anywhere from 5" to 19" wide and 4" to 14'' deep. A small mailbox can comfortably hold about 10–15 standard letters and two rolled magazines or newspapers.
Medium mailboxes are another great option for standard residential properties. They are designed to be slightly larger than small mailboxes and can be installed on the wall or on a post. A medium mailbox can hold everything a small mailbox can hold along with padded documents and any smaller packages you may receive. The standard medium mailbox dimensions are between 6" to 20'' tall, 6" to 20'' wide, and 10" to 20'' deep. If you are someone who loves online shopping or has a lot of subscription magazines that come in throughout the week, this is the ideal size for your needs.
Large mailboxes can still be used for residential properties, but their extra room is also beneficial for businesses. Large mailbox dimensions are typically between 12" to 20'' tall, 10" to 20'' wide, and 6" to 20'' deep. They hold small- and medium-sized boxes in addition to letters and catalogs. Magazines or newspapers do not have to be rolled up in order to fit in this size mailbox since there’s enough space for everything to be placed strategically. These are typically installed on a post at the end of your driveway.
An extra-large mailbox is best for collecting large packages, so this option is most beneficial if you’re a homeowner who frequently orders sizable packages or you’re a business owner receiving inventory. These types of mailboxes can be installed on a post at the end of your driveway, or you can place them to the side of your porch. Extra-large mailboxes have dimensions that range from 20" to 40'' tall, 15" to 40" wide, and 10" to 17'' deep. These mailboxes can also hold your everyday mail if you choose this option for all mail deliveries.
Tip!
Now that you have figured out which mailbox you want, you can learn how to install yours with our guide: How to Install a Mailbox: Our Easy Step-by-Step Guide.
Frequently Asked Questions
Which mailbox size is best if I receive a lot of packages?
If you frequently receive packages, a large or extra-large mailbox is ideal, as these sizes can accommodate small- to medium-sized boxes along with your daily mail.
Can extra-large mailboxes be used for residential properties?
Yes, extra-large mailboxes work well for homeowners who frequently order sizable packages, and they can also hold your everyday mail if you choose this option for all deliveries.
How much mail can a small mailbox hold?
A small mailbox can comfortably hold about 10 to 15 standard letters and two rolled magazines or newspapers.
