Charges for renting a post office box depend on the size of the post office box and frequently the location, as well. Prices start as low as $10/month (depending on box size and location). Some USPS post offices have a lengthy waiting list for available post office boxes, which has given rise in urban and business areas to private post office box services. Private post office box service rates also vary according to demand.
In the United States, standard box sizes are:
- Small box 1: 3" x 5.5"
- Small box 2: 5" x 5.5"
- Medium size 3: 11" x 5.5"
- Large size 4: 11" x 11" (drawer)
- Large size 5: 22.5" x 12" (drawer)
- Depth of most post office boxes is 14.75"
The location also has an impact on the cost of the box. Central business district (CBD) PO boxes are in higher demand and command a higher price compared to rural PO boxes. The rates in renting a PO box in the United States used to be standardized. Now, the rental rate is divided into seven fee groups, which are based on the location of the post office station.
In the United States, there are customers who may be entitled to free post office box service.
