Chapman codes are largely a superset of the ISO 3166-2:GB and BS 6879 codes identifying administrative divisions in the United Kingdom, Ireland, the Isle of Man and the Channel Islands, but covering historical divisions. They were created by Dr Colin Chapman, and are widely used in genealogy.

They have no postal relevance and are not used by the Royal Mail.

Country codes[edit | edit source]

Channel Islands[edit | edit source]

England[edit | edit source]

Ancient counties[edit | edit source]

Scotland[edit | edit source]

Ancient counties[edit | edit source]

1975-1996 regions[edit | edit source]

Wales[edit | edit source]

Ancient counties[edit | edit source]

1974-1996[edit | edit source]

Ireland[edit | edit source]

References[edit | edit source]

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