Chapman Codes


Chapman codes are a set of 3-letter codes used in genealogy to identify the administrative divisions in the United Kingdom, Ireland, the Isle of Man and the Channel Islands.

They were created by the historian, Dr. Colin R Chapman, in the late 1970s, and as intended, provide a widely used shorthand in genealogy which follows the common practice of describing areas in terms of the counties existing in the 19th and 20th centuries.

Country Codes

EnglandENG
IrelandIRL
ScotlandSCT
Northern IrelandNIR
Channel IslandsCHI
Isle of ManIOM
WalesWAL

Channel Islands

AlderneyALD
GuernseyGSY
JerseyJSY
SarkSRK

Welsh Counties

AngleseyAGYBreconshireBRE
CaernarvonshireCAECardiganshireCGN
CarmarthenshireCMNClwydCWD
DenbighshireDENDyfedDFD
FlintshireFLNGlamorganGLA
GwentGNTGwyneddGWN
MerionethshireMERMid GlamorganMGM
MonmouthshireMONMontgomeryshireMGY
PembrokeshirePEMPowysPOW
RadnorshireRADSouth GlamorganSGM
West GlamorganWGM

Scotland

AberdeenshireABDAngusANS
ArgyllshireARLAyrshireAYR
BanffshireBANBerwickshireBEW
BordersBORButeBUT
CaithnessCAICentralCEN
ClackmannanshireCLKDumfries & GallowayDGY
Dumfries ShireDFSDunbartonshireDNB
East LothianELNFifeFIF
GrampianGMPHighlandHLD
Inverness ShireINVKincardineshireKCD
Kinross ShireKRSKirkcudbrightshireKKD
LanarkshireLKSLothianLTN
MidlothianMLNMorayshireMOR
NairnNAIOrkneyOKI
Peebles ShirePEEPerthPER
RenfrewshireRFWRoss & CromartyROC
RoxburghshireROXSelkirkshireSEL
ShetlandSHIStirlingshireSTI
StrathclydeSTDSutherlandSUT
TaysideTAYWest LothianWLN
Western IslesWISWigtownshireWIG

English Counties

AvonAVNBedfordshireBDF
BerkshireBRKBuckinghamshireBKM
CambridgeshireCAMCheshireCHS
ClevelandCLVCo. DurhamDUR
CornwallCONCumberlandCUL
CumbriaCMADerbyshireDBY
DevonDEVDorsetDOR
Yorkshire, East RidingERYEast SussexSXE
EssexESSGloucestershireGLS
Greater ManchesterGTMHampshireHAM
Hereford & WorcesterHWRHerefordshireHEF
HertfordshireHRTHumbersideHUM
HuntingdonshireHUNIsle of WightIOW
KentKENLancashireLAN
LeicestershireLEILincolnshireLIN
LondonLNDMerseysideMSY
MiddlesexMDXNorfolkNFK
Yorkshire, North RidingNRYNorth YorkshireNYK
NorthamptonshireNTHNorthumberlandNBL
NottinghamshireNTTOxfordshireOXF
RutlandRUTShropshireSAL
SomersetSOMSouth YorkshireSYK
StaffordshireSTSSuffolkSFK
SurreySRYSussexSSX
Tyne & WearTWRWarwickshireWAR
West MidlandsWMDYorkshire, West RidingWRY
West SussexSXWWest YorkshireWYK
WestmorlandWESWiltshireWIL
WorcestershireWORYorkshireYKS

Ireland Counties

Co. CarlowCARCo. CavanCAV
Co. ClareCLACo. CorkCOR
Co. DonegalDONCo. DublinDUB
Co. GalwayGALCo. KerryKER
Co. KildareKIDCo. KilkennyKIK
Co. LaoisLEXCo. LeitrimLET
Co. LimerickLIMCo. LongfordLOG
Co. LouthLOUCo. MayoMAY
Co. MeathMEACo. MonaghanMOG
Co. OffalyOFFCo. RosscommonROS
Co. SligoSLICo. TipperaryTIP
Co. WaterfordWATCo. WestmeathWEM
Co. WexfordWEXCo. WicklowWIC

Northern Ireland

Co. AntrimANTCo. ArmaghARM
Co. DownDOWCo. FermanaghFER
Co. LondonderryLDYCo. TyroneTYR