Because early rural communities were so small and because all communications were delivered by word of mouth, there was no need for any mailing addresses.
People knew the whereabouts of their relatives and neighbors, and messages were easily directed to them.
Then, as more of the common folk learned to read and write and as people began to inhabit and name more remote areas of the globe, word of mouth was no longer an efficient means of communication.
Difficulties arose with the increase in letter-writing, so to insure delivery to the correct party, home addresses were given.
