USPS Mailbox Regulations & Compliance
Mailboxes must meet specific USPS regulations to ensure mail delivery. Non-compliant installations can result in delayed or refused service. These resources explain current USPS standards and best practices.
- USPS Mailbox Height & Placement Rules: Learn the correct height and distance from the curb.
- Approved Mailbox Sizes: Understand USPS-approved mailbox dimensions and capacity requirements.
- Multi-Unit Mailboxes: Regulations for apartment buildings, commercial properties, and multi-family housing.
The diagram reflects USPS guidelines; however, some jurisdictions limit post base types, including required depth of concrete or the use of concrete altogether. Always confirm local city and county building codes, as certain areas have specific mailbox regulations or permit requirements. This information can be obtained through your town's Public Works or Highway Department.
