The first zip codes date back as far as 1943 and were only used in large metropolitan cities and were two digits that defined a specific postal branch within the city.
Senator Tester has been standing strong against the US Post Office since they announced they were considering cutting Saturday mail delivery.
Today the USPS decided to not pursue cutting Saturdays. Senator Tester Said:
Rural America depends on reliable and efficient mail delivery, which is why Congress has required 6-day mail...