KML is from Wikidata The IP postcode area, also known as the Ipswich postcode area, is a group of 33 postcode districts in the east of England, within 15 post towns. These cover most of Suffolk (including Ipswich, Bury St Edmunds, Aldeburgh, Brandon, Eye, Felixstowe, Halesworth, Leiston, Saxmundham, Southwold, Stowmarket and Woodbridge), plus southern Norfolk (including Thetford, Diss and Harleston) and a very small part of Cambridgeshire.