History records the existence of Pos Indonesia so long, the first post office was established in Batavia (now Jakarta) by the Governor-General Baron van Imhoff GW on August 26, 1746 with the aim of ensuring the safety of residents' letters further, especially for those who are trading from offices in outside Java, and those who come from and go to the Netherlands. Since then, the postal service has been born to assume the role and function of public services. As time goes on, Pos Indonesia now has been able to show their creativity in the field of postal Indonesian development by utilizing its network infrastructure which reaches about 24 thousand point services reached 100 percent of city / county, nearly 100 percent of districts and 42 percent of the urban / rural, and 940 remote locations in the Indonesian transmigration. Along with the development of information, communication and technology, networking Pos Indonesia already has 3,700 post office line, mobile and equipped elektronic post in a few major cities. All points are chain-connected with each other in a solid and integrated. ZIP code system was created to facilitate the processing of postal items where every inch of the area in Indonesia can be identified accurately.