AZ Arizona. The largest state by population is California. In addition to standardizing state abbreviations, the US Postal Service introduced the two-letter abbreviations to make space in a line with a maximum of 23 characters for the city, state, and ZIP code. Postal Service and should always be used where a ZIP code follows. These two-letter, no period, state abbreviations are recommended by the U.S. U.S. maps; States; Cities; Lakes; National Parks These are the two-letter abbreviations that are used by the United States Postal Service. As you know, there are 50 states in the United States of America. AL Alabama. CA California. GA Georgia Use our free state abbreviations quiz to learn the abbreviations for all 50 states. For your reference, we've also included a link to the official government website, the "old style" state abbreviation and the capital. State abbreviations should not be used when writing formal correspondence or for school reports. Description: This map shows 50 states and their abbreviations in USA. Print off a list of all 50 state and their abbreviations as a wall chart. The United States of America is a federal republic consisting of 50 states, a federal district (Washington, D.C., the capital city of the United States), five major territories, and various minor islands. The 50 State Abbreviations Learn with flashcards, games, and more — for free. The United States Post Office instituted two letter state abbreviations along with five digit zip codes in 1963. Printable state abbreviation list. These postal abbreviations should only be used in mailing addresses. Use the standard state abbreviations, with periods and spaces as shown, for all purposes other than postal addresses. CT Connecticut. AR Arkansas. Abbreviations of the states are used for postal addresses and in data processing, for the purpose of saving time and standardizing the appearance of addresses. FL Florida. CO Colorado. The largest state by area is Alaska, with the territory of 665,384 square miles. Go back to see more maps of USA  U.S. Maps. AK Alaska. Using State Abbreviations. This is a fill-in-the-blank quiz, so just type the correct state abbreviation into the box below, and then click the “Check” button. The current two-letter state abbreviations were introduced in October 1963, three months after the United States Postal Service adopted ZIP codes. The table below shows the US Postal Service (USPS) abbreviation for each of the United States, districts, territories, and possessions. United States postal abbreviation for each state. Title: TWO LETTER STATE ABBREVIATIONS Author: CSI Created Date: 3/3/2003 4:27:04 PM DE Delaware. All 50 state and their abbreviations in USA only be used when writing formal correspondence or school! Usa  U.S. maps period, state abbreviations quiz to Learn the abbreviations for all 50 in... 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