What Sizes Are Available?
Across the U.S. Postal Service, PO Boxes are available in 5 sizes. However, not all Post Offices have every size.

Size 1 - X-Small (3" x 5 1/2" x 14 3/4")
Our smallest box fits 10-15 letter-sized envelopes or up to 2 rolled magazines.

Size 2 - Small (5" x 5 1/2" x 14 3/4")
The square option can accommodate 10-15 letters or up to 5 rolled magazines.

Size 3 - Medium (11" x 5 1/2” x 14 3/4")
The medium size is wide enough that large envelopes and magazines can be stacked flat.

Size 4 - Large (11" x 11" x 14 3/4")
Easily stack 2 shoeboxes inside this roomy box, and still have room for 10-15 letters.

Size 5 - X-Large (22 1/2" x 12" x 14 3/4")
Incoming shipments? Our largest option is big enough for Flat Rate Boxes and parcels.

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