The WA postcode area, also known as the Warrington postcode area,[2] is a group of sixteen postcode districts in North West England, within nine post towns.

These cover north Cheshire (including Warrington, Frodsham, Knutsford, Lymm, Runcorn and Widnes), eastern Merseyside (including St Helens and Newton-le-Willows) and small parts of south-western Greater Manchester (including Altrincham).

The approximate coverage of the postcode districts: The Frodsham post town was introduced in June 1999; the post town for WA6 had previously been Warrington.

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