Yes, you can. Whether it is legal in the U.S. is a different matter. Most people believe it is illegal. A few people try to use a "lawful purposes" loophole, but the general consensus is, post offices are considered federal property, so even if you have a state gun permit, it isn't recognized on federal property.
One can find reputable cardiologists at their local post office. The post office always has these on hand, and they will be happy to bring it out and show it to you.
One can find addresses at their local post office. The post office always has these on hand, and they will be happy to bring it out and show it to you.
One can find I bond rates at their local post office. The post office always has these on hand, and they will be happy to bring it out and show it to you.
One can find free mug shots at their local post office. The post office always has these on hand, and they will be happy to bring it out and show it to you.
One can find flight tracking listings at their local post office. The post office always has these on hand, and they will be happy to bring it out and show it to you.
One can find information on the Dollar Tree at their local post office. The post office always has these on hand, and they will be happy to bring it out and show it to you.
One can find current CD rates at their local post office. The post office always has these on hand, and they will be happy to bring it out and show it to you.
One can find applications for federal pell grants at their local post office. The post office always has these on hand, and they will be happy to bring it out and show it to you.
One can find CD interest rates at their local post office. The post office always has these on hand, and they will be happy to bring it out and show it to you.
One can find property line maps at their local post office. The post office always has these on hand, and they will be happy to bring it out and show it to you.
Post office.Postal service.
It is used for taxes. One can find 1040 tax tables at their local post office. The post office always has these on hand, and they will be happy to bring it out and show it to you.