Chapman codes
Chapman codes are widely used abbreviations for county names. We use these three-letter codes when transcribing records as they save typing and need less space in the database than the full names.
Do not worry about researchers: they choose from a list of the county names written in full.
Chapman codes are a set of three-letter codes used in genealogy to identify the administrative divisions in the British Isles: the United Kingdom (of Great Britain and Northern Ireland), Ireland, the Isle of Man and the Channel Islands.
The codes were devised by the historian Dr Colin R Chapman, in the late 1970s. Today, they are a widely used shorthand in genealogy.
England counties
- Bedfordshire
 - BDF
 - Berkshire
 - BRK
 - Buckinghamshire
 - BKM
 - Cambridgeshire
 - CAM
 - Cheshire
 - CHS
 - Cornwall
 - CON
 - County Durham
 - DUR
 - Cumberland
 - CUL
 - Derbyshire
 - DBY
 - Devon
 - DEV
 - Dorset
 - DOR
 - Durham
 - DUR
 - Essex
 - ESS
 - Gloucestershire
 - GLS
 - Hampshire
 - HAM
 - Herefordshire
 - HEF
 - Hertfordshire
 - HRT
 - Huntingdonshire
 - HUN
 - Isle of Wight
 - IOW
 - Kent
 - KEN
 - Lancashire
 - LAN
 - Leicestershire
 - LEI
 - Lincolnshire
 - LIN
 - London (the city)
 - LND
 - Middlesex
 - MDX
 - Norfolk
 - NFK
 - Northamptonshire
 - NTH
 - Northumberland
 - NBL
 - Nottinghamshire
 - NTT
 - Oxfordshire
 - OXF
 - Rutland
 - RUT
 - Shropshire
 - SAL
 - Somerset
 - SOM
 - Staffordshire
 - STS
 - Suffolk
 - SFK
 - Surrey
 - SRY
 - Sussex
 - SSX
 - Warwickshire
 - WAR
 - Westmorland
 - WES
 - Wiltshire
 - WIL
 - Worcestershire
 - WOR
 - Yorkshire
 - YKS
 - East Riding Yorkshire
 - ERY
 - North Riding Yorkshire
 - NRY
 - West Riding Yorkshire
 - WRY
 
Scotland counties
- Aberdeenshire
 - ABD
 - Angus (Forfarshire)
 - ANS
 - Argyll (Argyllshire)
 - ARL
 - Ayrshire
 - AYR
 - Banffshire
 - BAN
 - Berwickshire
 - BEW
 - Bute (Buteshire)
 - BUT
 - Caithness
 - CAI
 - Clackmannanshire
 - CLK
 - Dumfriesshire
 - DFS
 - Dunbartonshire
 - DNB
 - East Lothian (Haddingtonshire)
 - ELN
 - Edinburghshire
 - MLN
 - Elginshire
 - MOR
 - Fife
 - FIF
 - Forfarshire
 - ANS
 - Haddingtonshire
 - ELN
 - Inverness-shire
 - INV
 - Kincardineshire
 - KCD
 - Kinross-shire
 - KRS
 - Kirkcudbrightshire
 - KKD
 - Lanarkshire
 - LKS
 - Linlithgowshire
 - WLN
 - Midlothian (Edinburghshire)
 - MLN
 - Moray (Elginshire)
 - MOR
 - Nairnshire
 - NAI
 - Orkney
 - OKI
 - Peeblesshire
 - PEE
 - Perthshire
 - PER
 - Renfrewshire
 - RFW
 - Ross and Cromarty
 - ROC
 - Roxburghshire
 - ROX
 - Selkirkshire
 - SEL
 - Shetland
 - SHI
 - Stirlingshire
 - STI
 - Sutherland
 - SUT
 - West Lothian (Linlithgowshire)
 - WLN
 - Wigtownshire
 - WIG
 
Wales counties
- Anglesey
 - AGY
 - Breconshire
 - BRE
 - Caernarvonshire
 - CAE
 - Cardiganshire
 - CGN
 - Carmarthenshire
 - CMN
 - Denbighshire
 - DEN
 - Flintshire
 - FLN
 - Glamorgan
 - GLA
 - Merionethshire
 - MER
 - Monmouthshire
 - MON
 - Montgomeryshire
 - MGY
 - Pembrokeshire
 - PEM
 - Radnorshire
 - RAD
 
Northern Ireland counties
- Antrim
 - ANT
 - Armagh
 - ARM
 - Down
 - DOW
 - Fermanagh
 - FER
 - Londonderry
 - LDY
 - Tyrone
 - TYR
 
Islands
- Channel Isles
 - CHI
 - Alderney
 - ALD
 - Guernsey
 - GSY
 - Jersey
 - JSY
 - Sark
 - SRK
 - Isle of Man
 - IOM