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Looking for the postcode for London? The London postal district is the area in England, currently of 241 square miles (620 km2), to which mail addressed to the LONDON post town is delivered. The area was initially devised in 1856 and throughout its history has been subject to periodic reorganisation, contraction and division into increasingly smaller postal units. It was integrated into the national postcode system of the United Kingdom during the early 1970's and now corresponds to the N, NW, SW, SE, W, WC, E and EC postcode areas. The postal district has also been known as the London postal area and as the inner area of the London postal region.

The STD Telephone dialling code for London UK is 020.
Areas completely covered by the 020 dialling code:
The City of London and the London Boroughs of Barking and Dagenham, Barnet, Brent, Camden, Ealing, Enfield, Greenwich, Hackney, Hammersmith and Fulham, Haringey, Harrow, Hounslow, Islington, Kensington and Chelsea, Kingston upon Thames, Lambeth, Lewisham, Merton, Newham, Redbridge, Richmond upon Thames, Southwark, Sutton, Tower Hamlets, Waltham Forest, Wandsworth and the City of Westminster are more or less completely covered by the code.
If you are searching for the location of a London postcode - enter the code in the search box below:

The postal codes used in the United Kingdom are known as postcodes. They are alphanumeric and were introduced by the Royal Mail over a 15-year period from October 1959 to 1974. A full postcode is known as a "postcode unit" and usually corresponds to a limited number of addresses or a single large delivery point. Postcode units consist of between five and seven characters, separated into two parts by a space; there are approximately 1.8 million postcode units.

The first part of the postcode unit is known as a "postcode district", or outward code, and usually corresponds to all or part of a post town. Postcode districts with the same one or two character prefixes are grouped into 124 postcode areas. Postcodes have been adopted for a wide range of purposes in addition to aiding the automating sorting of the mail; and are used to calculate insurance premiums, designate destinations in route planning software and are used as the lowest level of aggregation in census enumeration.

Postcode data are stored, maintained and periodically updated in the Postcode Address File database, along with the full address data for around 27.5 million delivery points. An earlier system of postal districts was implemented in London and other large cities from 1857. In London this system was refined in 1917 to include numbered subdivisions, extending to the other cities in 1934. These earlier districts were later incorporated into the national postcode system.
This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia article "Postcodes in the United Kingdom".

Postcode Pat in his checkerboard hat
Postcode Pat in his checkerboard hat
Contains Ordnance Survey data Crown copyright and database right 2010
Contains Royal Mail data Royal Mail copyright and database right 2010.