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In 1959, as part of the Zone Improvement Plan (ZIP Code).

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Q: When did two letter state abbreviations begin?
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Related questions

When did two-letter state abbreviations become standard?

1963


What is Miss short for?

Prior to the introduction of two-letter state abbreviations in 1963, "Miss." was the official abbreviation for "Mississippi".


How should state postal abbreviations be alphabetized?

State portal abbreviations should be alphabetized based on the first letter in the abbreviation. For example, AL(Alabama) would come before TX (Texas).When the first letter in two abbreviations match, then the second letter should be used to determine alphabetical order. For example, AL (Alabama) would come before AZ (Arizona).


When was California's state abbreviation Calif?

Calif. was the popular abbreviation for California from the time it became a territory until 1963, when the US Postal Service introduced standardized two-letter state abbreviations. Starting in 1963, CA is the official abbreviation of California. Two-letter state abbreviations were introduced to make room from Zip Codes, which were also introduced in that year.


What is a postal abbreviation?

See the links below for state postal abbreviations. In short, it's a two-letter code for a state, like OH for Ohio, or HI for Hawaii.


What punctuation is used in a state abbreviation in a sentence?

A period is used in a state abbreviation in a sentence. For example, "She lives in Portland, OR."


Do you use periods with state names or capital letter abbreviations?

It is most common to use capital letters for state abbreviations and no periods. The reason is because the two-letter capital letters are U.S. Postal Service approved. Also, it is poor form to abbreviate states like Mass. for Massachusetts. It is recommended you use MA with no periods.


What is the abbreviation for the word 'Italian'?

"it" and "ita" are abbreviations for the word "Italian." The two abbreviations respectively illustrate the two-letter and three-letter International Organization for Standardization ISO 639 language codes. They also may be found elsewhere for abbreviations regarding Italy and the Italian language and people.


What does CA AZ TX stand for?

They are the two-letter abbreviations for California, Arizona and Texas respectively.


What US state capitals start with the letter R?

There are two US state capitals that begin with R. They are Raleigh, NC and Richmond, VA.


When did the Post Office change the state abbreviations letters?

In 1963, the Post Office Department implemented the five-digit ZIP Code, which was placed after the state in the last line of an address. To provide room for the ZIP Code, the Department issued two-letter abbreviations for all states and territories. Publication 59, Abbreviations for Use with ZIP Code, issued by the Department in October 1963, told why. Two letter abbreviations were provided by the Post Office Department as an aid to mailers in accommodating ZIP Codes with the usual City-State line of addresses. The abbreviations are based on a maximum 23-position line, because this has been found to be the most universally acceptable line capacity basis for major addressing systems. A breakdown of the City-State-ZIP Code line positions is as follows: 13 positions for city, 1 space between city and State designations, 2 positions for State designation, 2 spaces between State designation and ZIP Code, and 5 positions for ZIP Code. Only one change has been made to the abbreviations issued in 1963. the two-letter abbreviation for Nebraska, originally NB, was changed to NE to avoid confusion with New Brunswick in Canada.


Two states begin with the letter t if the states are put in alpha order what is the capital of the second state?

austin