Postcode Sector Maps - a set of 37 maps showing Postcode Sectors

This is one of 37 pre-defined map sheets that covers the UK at Sector level displaying all of the first part of the postcode and the first number of the second part, or Inward Code, at a scale of an inch to 2.4 miles. This Sector map includes all of the postcode changes in the most recent Royal Mail Postcode Update. Area, District and Sector boundaries and numbers/letters are shown in red with County and Unitary Authority boundaries presented in green. The map base shows motorways, primary, ‘A’ and down to unclassified roads with conurbation shapes and city plan insets showing street level detail for major cities.

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Postcode Sector Map Range

How Sector Postcodes Work

Postcode Sectors (9,000 in total) which are denoted by the first number of the second part of the Postcode. This half of the Postcode is called the Inward Code.

Example: SW6 3