On July 1, 1963 a new mail coding system, the Zoning Improvement Plan, was launched by U.S. Postmaster General J. Edward Day. La Cañada, approximately 15 years before it was incorporated as the city of La Cañada Flintridge, was assigned the ZIP code 91011.
Upon incorporation, Flintridge gave up its 91103 ZIP and joined the rest of us in 91011-land. And so we’ve remained, one happy family for all these years.
My memory is fuzzy on the subject, since I was a kid at the time, but I seem to recall that there was a flurry of chatter around here that summer of 1963 centering on the belief that we were the only town in the nation with consecutive numbers in its ZIP.
People who like to study quirky little things like this might appreciate the fact that we did a little research this week with help from Richard Maher, spokesman with the U.S. Postal Service. He discovered for us that there are actually four active ZIP codes today that run in numerical sequence. They are: