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For the purposes of directing mail, the United Kingdom (although the populations listed just show figures for England, Wales and Northern Ireland), is divided by Royal Mail into postcode areas. The postcode area is the largest geographical unit used and forms the initial characters of the alphanumeric UK postcode . [ 1 ]
The postcode area is the largest geographical unit used and forms the initial characters of the alphanumeric UK postcode. [1] There are currently 121 geographic postcode areas in use in the UK and a further three often combined with these covering the Crown Dependencies of Guernsey, Jersey and Isle of Man.
A group of postcode districts with the same alphabetical prefix is called a postcode area. All, or part, of one or more postcode districts are grouped into post towns. [1] Until 1996, Royal Mail required counties to be included in addresses, except for 110 of the larger post towns.
Royal Mail (1999). Address Management Guide (6th ed.). "Royal Mail major recode historical information – 2000 to September 2011" (PDF). Royal Mail. 3 November 2011. Archived from the original (PDF) on 26 September 2017
The postal counties of the United Kingdom, now known as former postal counties, [1] were postal subdivisions in routine use by the Royal Mail until 1996. [2] The purpose of the postal county – as opposed to any other kind of county – was to aid the sorting of mail by differentiating between similar post towns .
The full delivery address including postcode can be validated against the Royal Mail Postcode Address File (PAF), which lists 29 million valid delivery addresses, [27] constituting most (but not all) addresses in the UK. [28] A regular expression for validating UK postcodes is specified in the British Standards document BS 7666. [29]
This is a list of ceremonial counties in England by population in 2021/2022. [1] Rank County Total population Region 1: Greater London: 8,901,000: London 2: West ...
English: Labelled map of Royal Mail postcode areas of the United Kingdom and Crown Dependencies with insets for Manchester and London conurbations, together with former postal counties. Equirectangular projection with latitude stretching 170%, WGS84 datum. Geographic limits: Main 1:5,000,000 map: West: 11.00W; East: 2.20E; North: 61.00N; South ...