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To send mail, only the first five digits of the ZIP code are required. The second and third digits represent a region in that group, such as a large city. The first digit in a ZIP code represents a defined group of U.S. ZIP+4 codes, also known as add-on or plus-four codes, include four additional digits that identify a geographic segment within a ZIP code delivery area. United States ZIP codes are five numerical digits long. What you’ll notice is that every digit within a ZIP code conveys meaning as part of a methodical plan. This comprehensive FAQ resource will be helpful. For an in-depth understanding of the ZIP code, the United States Postal Service is the definitive resource. Errors in ZIP codes may result in processing delays. The role of the ZIP code is to process data with expediency and efficiency. The goal of this article is to help you understand the context behind this combination of numbers in more depth and detail, so that you can effectively leverage this data point in your business. It’s an important parameter for sending mail, managing fraud detection, or researching demographic information. ZIP code data is an integral part of business operations in the United States. Source: United States Postal Service U.S.ZIP Code Overview The Importance Of ZIP Codes
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These are included on a second table below.
#Us zip code free#
The Marshall Islands, Micronesia, and Palau are all free associates. Some former territories still maintain postal codes, as they are considered free associates of the United States. The populated ones have their own postal codes, but only the two most populous (Puerto Rico and Guam) have abbreviations. In addition to the fifty states and D.C., the United States also holds several overseas territories. Since 1963 there has been only one change to the postal codes in 1969, at the request of the Canadian government, the code for Nebraska was changed from NB to NE, to avoid confusion between Nebraska and New Brunswick. They were originally intended as optional tags for businesses, but became standard for everyone over time. The Current Systemīut what about the postal codes? That same year, in October, came Publication 59. They also released new shorter state abbreviations to make room for ZIP codes on letters. The bulletin introduced the ZIP Code as a fast and easy way of organizing mail. This system proved effective, and became de facto practice up until the release of the Postal Bulletin for June, 1963. The post offices began breaking down cities into broad numbered regions (like Birmingham 7, etc.) to narrow the field for carriers. The people who were left also weren't as familiar with the parts of town they didn't work in prior. When the war called away huge numbers of the country's young men, the post was seriously understaffed. These would be the default codes until World War II. Due to the growing workforce, the admission of new states, and more interstate mail thanks to the likes of the Pony Express, the government sent out a new, bigger list of abbreviations in 1874.
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As mail carriers began taking more complicated and longer routes through the cities, the number of carriers grew. This was the origin of the modern system of home letter deliveries. President Abraham Lincoln (a former postman himself) was persuaded to begin free letter shipping in cities in 1863. The Beginnings of the Modern Mail Service
#Us zip code full#
They preferred that people just write the full names, but people enjoyed the quicker and easier way of writing (just like today). In 1831 the Post Office Department included a list of acceptable state abbreviations to use when addressing letters. The Table was essential for people to figure out where they could send their mail and where it could be received back when they were expected to retrieve it themselves. The story starts in 1831?well before the states were given codes?with that year's Table of Post Offices in the United States. What's more, the two-letter abbreviations that people are familiar with today actually came after the invention of ZIP codes. But, a lot of people might not realize that USPS postal codes are actually quite recent. is long, complicated, and supremely important for westward expansion. The history of the postal service in the U.S. If you think you know them all, try our postal codes quiz. Here are the recognized abbreviations for each state name, as well as their official two-letter postal code. But, especially in the age of texting, people like to abbreviate. The post office advises people to write out full state names when sending a letter. Updated Janu| Logan Chamberlain From AL to WY