BT postcode area — Northern Ireland postal codes BT postcode area The BT postcode area covers all of Northern Ireland. Introduced in the early 1970s, BT codes structure addresses for mail, navigation, statistics and services across towns from Bel…
Postal codes in Taiwan Overview of Taiwan's five-digit postal code system maintained by Chunghwa Post: structure, scope, special cases (offshore islands and disputed territories), uses, and how to look u…
