Mailbox Installation

Township Road Districts of McHenry County Typical Mailbox Installation Specifications Print Minimize


  • Mailboxes must be properly installed so as to allow for convenient servicing by the letter carrier and avoid future problems.
  • The use of a group mailbox stand (i.e., a number of mailboxes on one support) is encouraged where possible. This helps the letter carriers to speed up deliveries and avoids damage by snowplows.
  • Only United States Postal Service approved mailboxes may be used.
  • The front of the mailbox should be located as shown.
  • The bottom of the mailbox must be 40 – 44 inches above the pavement surface.
  • Residents are responsible for keeping their mailbox in good repair.
  • The ideal mailbox support is an assembly which, if struck, bends or falls away from the striking vehicle of severely damaging the vehicle and injuring its occupants. Mailbox supports no larger than 4 inch by 4 1/2 inch wood posts, or 2 inch diameter standard steel or aluminum pipe, buried no more than 24 inches in the ground, should safely breakaway if struck by a vehicle.
  • The use of heavy metal posts, concrete posts, and miscellanous items of farm equipment such as milk cans filled with concrete is not permitted. A brick, stone, or any cement structure of permanent nature is strictly prohibited.

The above regulations comply with the National Safety Council and Federal Highway Administration regulations.