ZIP   CODE  INFORMATION :-

Mr. ZIP 

The United States Post Office Department (USPOD) implemented postal zones for large cities in 1943. The early 1960s a more organized system was needed, and on July 1, 1963, non-mandatory ZIP codes were announced for the entire country. Simultaneously with the introduction of the ZIP code,two-letter state abbreviations were introduced. These are generally written with both letters capitalized. The reason for the two-letter abbreviations is that it was thought that a long city name coupled with a multi-letter state abbreviation. (e.g. Mass. for Massachusetts; Ca., Cal., or Calif. for California; Pa.,Penn., or Penna. for Pennsylvania) would be too long for address labels used on magazines when the ZIP code was added. Robert Moon, an employee of the post office, is considered the father of the ZIP code; he submitted his proposal in 1944 while working as a postal inspector. n 1967, these were made mandatory for second- and third-class bulk mailers, and the system was soon adopted generally. The United States Post Office used a cartoon character, whom it called Mr. ZIP, to promote use of the ZIP code. He was often depicted with a legend such as "USE ZIP CODE" . ZIP codes are numbered with the first digit representing a certain group of U.S. states, the second and third digits together representing a region in that group (or perhaps a large city) and the fourth and fifth digits representing a group of delivery addresses within that region. The main town in a region (if applicable) often gets the first ZIP codes for that region; afterward, the numerical order often follows the alphabetical order.