CEP is the acronym used to refer to a Postal Code, having been created by the Brazilian Company of posts and Telegraphs, or simply Post office, in the year 1971, with the aim to organize and facilitate the posting, as well as to locate and distribute the correspondences of obeying a logical manner.
What is CEP
Initially, the code was composed of only 5 digits, however, with the growth of population and the increase of the amount of matches, it became necessary to change the format and add new numbers. In 1992, the codes began to be formed by 8 digits, the last three are separated by a hyphen of the first 5 numbers. The change held by the Post office, was published in the Guia Postal Brasileiro in the same year.
The structure of the CEP was held after the division of Brazil into 10 areas postal, comprised between 0 and 9, whose count had its beginning in the region of the Great São Paulo, which was well established:
0xxxx: Big São Paulo;
1xxxx: the Coast and the interior of Sao Paulo;
2xxxx: Rio de Janeiro (up to 28.999) and the Holy Spirit;
3xxxx: Minas Gerais;
4xxxx: Bahia (up to 48.999), and Sergipe;
5xxxx: Pernambuco (up to 56.999), Alagoas (up to 57.999), Paraíba (up to 58.999) and Rio Grande do Norte;
6xxxx: Ceará (up to 63.990), Piauí (up to 64.990), Maranhão (up to 65.990), Pará (up to 68.890), Amapá (up to 68.999), Amazon (up 69.299), Acre (up to 69.899) and Roraima;
7xxx: the Federal District (until 73.699), Goiás (up to 76.799), Rondônia (up to 76.999) Tocantins (to 77.999), Mato Grosso (up to 78.899) and Mato Grosso do Sul;
8xxxx: Paraná (until 87.999) and Santa Catarina;
9xxxx: Rio Grande do Sul.
In 2008, both Rondônia and Goiás suffered a reduction in its tracks, being that the northern state had its range of 78.800-78.999 to 76.800-76.999 and Goiás 76.999 to 76.799.