Editing Postal code (section)

=== States and overseas territories sharing a postal code system ===
French overseas departments and territories use the five-digit [[French postal code system]], each code starting with the three-digit department identifier. [[Monaco]] is also integrated in the French system and has no system of its own.

The British [[Crown Dependencies]] of [[Guernsey]], [[Jersey]] and the [[Isle of Man]] are part of the UK postcode system. They use the schemes AAN NAA and AANN NAA, in which the first two letters are a unique code (GY, JE and IM respectively). Most of the Overseas Territories have UK-style postcodes, with a single postcode for each territory or dependency, although they are still treated as international destinations by Royal Mail in the UK, and charged at international rather than UK inland rates. The four other Overseas Territories [[Anguilla]], [[Bermuda]], [[British Virgin Islands]] and [[Cayman Islands]] have their own separate systems and formats.

The Pacific island states of [[Palau]], [[Marshall Islands]] and the [[Federated States of Micronesia]] remain part of the US [[ZIP code]] system, despite having become independent states.

[[San Marino]] and the [[Vatican City]] are part of the [[Italy|Italian]] postcode system, while [[Liechtenstein]] similarly uses the [[Switzerland|Swiss]] system, as do the Italian exclave of [[Campione d'Italia]] and the German exclave of [[Büsingen am Hochrhein]], although they also form part of their respective countries' postal code systems.

The [[Czech Republic]] and [[Slovakia]] still use the codes of the former [[Czechoslovakia]], their ranges not overlapping. In 2004–2006, Slovakia prepared a reform of the system but the plan was postponed and may have been abandoned. In the Czech Republic, there was no significant effort to modify the system.