Curbside Mailbox Placement

Mailbox Placement

Proper mailbox placement will help avoid damage from snowplows or street crews.

Curbside Mailboxes

Mailbox Size and Construction Standards

A mailbox with the Postmaster General's (PMG) seal of approval meets USPS size and construction standards. If you build your mailbox or buy a custom-made one, it must meet the PMG standards. Show your local postmaster your mailbox plans or your custom-made box for approval.

Placement of the Mailbox

Here are some helpful guidelines to follow when placing your mailbox:

• Position your mailbox 41 to 45 inches from the road surface to the bottom of the mailbox or point of mail entry.
• Place your mailbox 6 to 8 inches back from the curb. If you do not have a raised curb, contact your local postmaster for guidance.
• Put your house or apartment number on the mailbox on both sides.
• If your mailbox is on a different street from your house or apartment, put your full street address on the box.

Installing the Mailbox Post

The best mailbox supports are stable but bend or fall away if a car or snowplow hits them. The Federal Highway Administration recommends:

• A 4-inch by 4-inch wooden support or a 2-inch diameter standard steel or aluminum pipe.
• Avoid unyielding and potentially dangerous supports, like heavy metal pipes, concrete posts, and farm equipment (e.g., milk cans filled with concrete).
• Bury your post no more than 24 inches deep.