Postcode

A UK postcode (also known in various countries as post code, postal code or zip code) is an alpha-numeric code which sits at the end of a postal address for the purpose of sorting mail.

The UK introduced the postcode in 1959. UK postcodes have between 5 and 8 characters, with a space between the first and second parts of the postcode, e.g. 10 Downing Street's postcode is SW1A 2AA.

The first part of a postcode - the "outcode" - identifies the postal district, i.e. SW is South West London. The second part - the "incode" - depicts the delivery points within that postal disctrict that the local Royal Mail Delivery Office serves. There are about 15 delivery points per postcode.

A postcode helps you find a full address. With a full and accurate address, you can send post to the correct location, saving time and money, and improving customer satisfaction and brand perception.

Related information

• Visit our UK Experian QAS site