Find & Apply for a PO Box ™

Enter your address or ZIP Code ™ to search for a PO Box near you. Select the location you want and check for availability and size options.

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You must be 18 years old to open a PO Box online. If you’re under 18, please visit your nearest Post Office.

Can’t find what you’re looking for?

Check out our Support section to find answers to your PO Box questions.

Which size is right for me?

Size 1-XS: 3" x 5.5"
Holds 10-15 letters or 2 rolled magazines

Size 2-S: 5" x 5.5"
Holds 10-15 letters or 5 rolled magazines

Size 3-M: 5.5" x 11"
Allows large envelopes and magazines to be stacked flat

Size 4-L: 11" x 11"
Holds 2 shoeboxes and still has room for 10-15 letters

Size 5-XL: 12" x 22.5"
Big enough for multiple Flat Rate Boxes and parcels

The depth of most PO Boxes is 14.75".
All sizes not available in all locations.

We offer extra services for your convenience.

• Your PO Box comes with a real street address so you can order online and receive packages from any shipper.
• Signature on File service means you don't have to go to the retail counter to pick up certain signature and insured items. (Priority Mail Express ® , Signature Confirmation™, and Insured Mail greater than $500)
• "Baker's Dozen" promotion provides one month of free service when you pay for 12 months.
• No key deposit required for the first two keys for a new PO Box.
• Expanded PO Box lobby access hours.*
• Earlier mail pickup times.*

*Limited and only in select locations.

We offer parcel lockers for your convenience.

• Parcel lockers are used to deliver packages too large to fit in your PO Box. Pick up large packages from parcel lockers without having to visit the retail counter.