The WC (Western Central) postcode area, also known as the London WC postcode area, is a group of postcode districts in central London, England. It includes parts of the London Borough of Camden, City of Westminster, London Borough of Islington and a very small part of the City of London. The area covered is of very-high density development. The current postcode districts are relatively recent: divisions WC1 and WC2 districts established only in 1917. Where the districts are used for purposes other than the sorting of mail, such as use as a geographic reference and on street signs, they continue to be commonly grouped into these two 'districts'.
Both the WC1 and WC2 postcode districts are part of the Londonpost town. There are no dependent localities used in the postcode districts. The numbered districts were created in 1917. Before then it they had been included in the WC postal district. There has been no significant recoding of the postcode area from 1990 to 2007. There are Post Office branches in the WC1 postcode district at Grays Inn, High Holborn, Marchmont Street and Russell Square; and in the WC2 postcode district at Aldwych and Trafalgar Square. The Western Central District Office was located on New Oxford Street, which was a stop on the London Post Office Railway. Deliveries for WC1 and WC2 now come from Mount Pleasant Mail Centre in Farringdon Road.