![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 ...
![What does PO Box mean? - Definition of PO Box - PO Box stands for Post Office Box. By AcronymsAndSlang.com What does PO Box mean? - Definition of PO Box - PO Box stands for Post Office Box. By AcronymsAndSlang.com](http://acronymsandslang.com/acronym_image/2625/6c24a43e593e04ac3cb2c250c19e7ec2.jpg)