UK Postcode Geography

This page provides a brief overview of the postcode geography in the UK.

There are approximately 1.7 million unit postcodes in the UK. A unit postcode is the whole postcode, e.g. TN2 3JU.

The next level up is the postcode sector, e.g. TN2 3. There are approximately 9,000 of these in the UK.

The next level up is the postcode district, e.g. TN2. There are approximately 2,900 of these in the UK.

The top level of postcode geography in the UK is the postcode area, e.g. TN. There are 121 postcode areas in the UK.