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This article makes only passing reference to 11 digit ZIPs, whereas it concentrates a lot on ZIP+4. I'd like to see more information on ZIP11. I remember when it was first implemented, but I know very little about it. --Tim Sabin (talk) 16:08, 30 March 2010 (UTC)
I don't think there's anyone continually working on this article, you may want to do a little research yourself. Wikipedia will be the better for it.--Wehwalt (talk) 16:20, 30 March 2010 (UTC)
Second address format shows a proper ZIP Code address as: Mr. John Smith 3256 Epiphenomenal Avenue Minneapolis, Minnesota 55416
The previous paragraph stated:
“Simultaneously with the introduction of the ZIP code, two-letter state abbreviations were introduced. These were to be written with both letters capitalized.”
Therefore, the proper address format with ZIP Code and two-letter state abbreviation should be:
Mr. John Smith 3256 Epiphenomenal Avenue Minneapolis, MN 55416
Just a minor correction from a retired old postmaster. Paul L. Fletcher 1816 N. Moreland Ave. Indianapolis, IN 46222-4828 — Preceding unsigned comment added by 22.214.171.124 (talk) 22:23, 28 December 2011 (UTC)
Postal zones in big cities are seen in advertisements from 1920
As of this writing, the article states that postal zones in big cities (such as "Minneapolis 16") began in 1943. But I have been looking at journal and magazine advertisements from 1920, and have seen several examples of them. Here are two: Boston 9, Mass. and Boston 9, Mass.. Perhaps someone can look deeper into the history of these zone numbers. Possibly me, later, although not right now. — ¾-10 21:03, 10 February 2013 (UTC)