[1] A plan to introduce a postcode system, was first announced on June 6, 2005.
[3] Despite reports in the Sunday Observer in 2006 that it would be ready introduced by the end of that year, the system was not brought into force because plans to introduce it to Kingston in July 2005 were put on hold due to the fact that the public had difficulty understanding the system.
[4] On February 12, 2007 it was announced that the postcode project had been suspended indefinitely.
[5] The codes were planned to be alphanumeric, in the format: JMAPPNN, where The zones were described in a press release of Jamaica Post 18 July 2005,[6] the encoding of the post offices one week later on 25 July 2005.
Although Kingston, the country's capital, along with part of the parish of St Andrew, was already subdivided into postal zones, these were not incorporated into the new codes.