What Are the Requirements for a Curbside Mailbox?

By: Danny Lipford

Black mailbox with 6093 number on it.

I’m installing a mailbox at the curb. How high should it be, and are there other postal service requirements? -Tom

Hi Tom,

You should start by contacting your local post office to make sure the mailbox and location you would like to install it meets with their approval. Here are some general guidelines for a curbside mailbox:

  • The bottom of the mailbox should be from 41” to 45” above the road.
  • The front of the mailbox should be set back 6” to 8” from the curb.
  • The lettering for the name and address on the mailbox should be at least 1” high.
  • The box must be located on the right-hand side of the road in the direction the mail carrier will be traveling.

Good luck with your project,


Further Information



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4 Comments on “What Are the Requirements for a Curbside Mailbox?”

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  • Tom McConnell Says:
    April 19th, 2016 at 9:03 pm

    While it isn’t a requirement, it’s a good idea to check with the carrier and see if he/she has any ideas. Sometimes a very small adjustment can result in making their job easier, and they don’t forget that.

  • Jim D Says:
    April 19th, 2016 at 5:12 pm

    And if you’re in the market for a new home, LOOK TO SEE if the neighborhood has mailboxes. Many new subdivisions are being built with cluster boxes-the Post Office is no longer offering house to house delivery for many new subdivisions. So if no one else has a box, you’ll need to figure out where the cluster boxes are.

  • Ivan Huston Says:
    January 24th, 2016 at 9:54 am

    All curbside mailboxes should be located so when the carrier stops for delivery his/her vehicle will not be blocking a driveway. A safety issue.

    Supervisor, Delivery & Collection

  • cna training Says:
    August 25th, 2010 at 9:49 am

    Great information! I’ve been looking for something like this for a while now. Thanks!

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