PO Box Size

All available PO Box sizes are listed for each Post Office location. If a size is not listed in the search results for the Post Office you prefer, that Post Office does not carry boxes of that size.

Box sizes are:

Size 1 3" x 5.5"




Size 2 5" x 5.5"




Size 3 11" x 5.5"




Size 4 11" x 11"




Size 5 22.5" x 12"



Depth of most PO Boxes is 14.75".

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