USPS Mailbox Installation Guidelines

USPS residential curbside mailbox regulations should be reviewed prior to purchasing your new mailbox.

Mailbox Regulations and USPS Mailing Resources

USPS Guidelines for Installation of Residential Mailboxes

After selecting and purchasing the perfect large locking curbside mailbox for your home or business, the next step is installing the new mailbox.

The USPS has specific guidelines for installing curbside or wall mounted mailboxes and you will want to pay close attention to the height and distance from the road.

Here are detailed installation guidelines from the USPS. Stay tuned for more information about the new regulations for curbside mailboxes.

Look for Postmaster General’s Seal

Every new mailbox design should be reviewed and receive the Postmaster General’s (PMG) seal of approval before it goes to market. If you opt to construct your own mailbox, it must meet the same standards as manufactured boxes, so show the plans to your local postmaster for approval.

USPS Mailbox Guide


US State Abbreviation Details

List of U.S. state abbreviations>

state code is the same as the USPS state code except for U.S. Minor Outlying Islands, which have an ANSI code “UM” but no USPS code—and U.S. Military Mail

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US Zip Code Details

ZIP code

ZIP codes are a system of postal codes used by the United States Postal Service (USPS) since 1963. The term ZIP, an acronym for Zone Improvement Plan

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