No such number. No such zone.
The Curmudgeon has had some good things to say about the U.S. Postal Service in the past.
But then there are stories like this one.
On September 7, 2013, a friend of The Curmudgeon who lives in New Jersey, just ten minutes from the river separating Pennsylvania and New Jersey, sent a friend just minutes across the bridge spanning that river an invitation to her son’s bar mitzvah. Mapquest says the originating and destination addresses are 8.6 miles apart and can be reached by car in 16 minutes.
The invitation was returned to The Curmudgeon’s friend marked “Return to sender: Not deliverable as addressed.”
On March 25, 2016.