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Reply to "U.S. Postal Service Issues Golden Spike Stamp"

TeleDoc posted:

ZIP is Zone Improvement Plan, created in 1963, & updated to add 4 additional numbers, for a more specific zone, in 1983., (00000-000 format).

I thought the +4 was even more specific than that, taking you right down to the house level. That gives them 10K more unique numbers per five digit Zip. Mine is 1881.

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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