Ochopee, Florida - Smallest US Post Office

The post office at Ochopee in Florida claims to be the smallest in the United States. Ochopee is an unincorporated township in the south-west of Florida. Right on the edge of the Everglades.

This was stamped on the back of the envelope. 

I would guess the post office is big enough for a single postal clerk . Not sure if customers go into the post office or if they stand outside and conduct business over the counter at the doorway. This post office has been open since 1953.