![PO Box sizes 100, 102, 103, 104, 105 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 ... PO Box sizes 100, 102, 103, 104, 105 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 ...](https://www.usps.com/globals/images/POBox_LRG.jpg)
PO Box sizes 100, 102, 103, 104, 105 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 ...
![Post Office Box (PO Box) vs Private Mailbox (PMB) Rental — which is better? | by Bianka Cardwell | Medium Post Office Box (PO Box) vs Private Mailbox (PMB) Rental — which is better? | by Bianka Cardwell | Medium](https://miro.medium.com/max/1400/1*nDR8A8rfnXHu5xV8N4zWLA.jpeg)