A United States Post Office (Post Office) is where junk mail is created and delivered.
Where The Post Office Can Be FoundEdit
Everywhere..but soon to be nowhere
People Who Work At The Post OfficeEdit
For a good idea of what it's like to work at the post office, check out the book "Post Office Paranoid" at www.postofficeparanoid.com or Amazon.com
What Happens At The Post OfficeEdit
...stays at the post office