The Northern Ireland House of Commons existed from 1921 to 1973 as the lower House of the devolved legislature of the part of the United Kingdom called Northern Ireland.
As in the UK Parliament the constituencies were classified as borough, county or university constituencies.
From 1921 to 1929, the 52 Members of Parliament were elected using proportional representation by the single transferable vote in multi-member constituencies established under the Government of Ireland Act 1920, which also established the same constituencies as one-member or two-member constituencies to the UK Parliament.
Between 1929 and 1969, under the House of Commons (Method of Voting and Redistribution of Seats) Act (Northern Ireland) 1929, there were 48 single-member constituencies, elected by first past the post. The non-territorial Queen's University of Belfast constituency continued to return 4 members using the single transferable vote.
From the 1969 election, under the Electoral Law Act (Northern Ireland) 1968, university representation was ended and 4 new territorial constituencies were created. The 52 constituencies ceased to exist after the Parliament of Northern Ireland was suspended in 1972 and abolished in 1973.
Period Constituency Type Notes 1921–1929 Antrim county 7 MPs 1929–1973 Antrim Borough county 1929–1973 Bann Side county 1929–1973 Carrick county 1969–1973 Larkfield county 1929–1973 Larne county 1929–1973 Mid Antrim county 1969–1973 Newtownabbey county 1929–1973 North Antrim county 1929–1973 South Antrim county 1921–1929 Armagh county 4 MPs 1929–1973 Central Armagh county 1929–1973 Mid Armagh county 1929–1973 North Armagh county 1929–1973 South Armagh county 1929–1973 Belfast Ballynafeigh borough 1929–1973 Belfast Bloomfield borough 1929–1973 Belfast Central borough 1929–1973 Belfast Clifton borough 1929–1973 Belfast, Cromac borough 1929–1973 Belfast Dock borough 1929–1973 Belfast Duncairn borough 1921–1929 Belfast East borough 4 MPs 1929–1973 Belfast Falls borough 1921–1929 Belfast North borough 4 MPs 1929–1973 Belfast Oldpark borough 1929–1973 Belfast Pottinger borough 1929–1973 Belfast St Anne's borough 1929–1973 Belfast Shankill borough 1921–1929 Belfast South borough 4 MPs 1929–1973 Belfast Victoria borough 1921–1929 Belfast West borough 4 MPs 1929–1973 Belfast Willowfield borough 1929–1973 Belfast Windsor borough 1929–1973 Belfast Woodvale borough 1921–1929 Down county 8 MPs 1929–1973 Ards county 1969–1973 Bangor county 1929–1973 East Down county 1929–1973 Iveagh county 1969–1973 Lagan Valley county 1929–1973 Mid Down county 1929–1973 Mourne county 1929–1973 North Down county 1929–1973 South Down county 1929–1973 West Down county 1921–1929 Fermanagh and Tyrone county 8 MPs 1929–1973 Enniskillen county 1929–1973 Lisnaskea county 1929–1973 South Fermanagh county 1921–1929 Londonderry county 5 MPs 1929–1973 City of Londonderry borough 1929–1973 Foyle borough 1929–1973 Mid Londonderry county 1929–1973 North Londonderry county 1929–1973 South Londonderry county 1921–1969 Queen's University, Belfast university 4 MPs 1929–1973 East Tyrone county 1929–1973 Mid Tyrone county 1929–1973 North Tyrone county 1929–1973 South Tyrone county 1929–1973 West Tyrone county
Historical representation by party Antrim Constituency192119251929193337193839434519454619495051195319586019621965681969707172Antrim / South Antrim (1929)Barbour UMcConnell UFerguson UBeattie PU--> DUPAntrim / Antrim Borough (1929)H. O'Neill UH. Minford UN. Minford UAntrim / Larne (1929)Hanna URobinson UTopping UCraig UAntrim / Mid Antrim (1929)Crawford UJ. Patrick UWilson USimpson UAntrim / Bann Side (1929)Megaw UHenderson UnbTYoung UM. Patrick UT. O'Neill UPaisley PU--> DUPAntrim / Carrick (1929)Gordon UCampbell UCurran UHunter UArdill UDickson UAntrim / North Antrim (1929)Devlin NMcAllister NLynn UMcCleery UP. O'Neill U--> A
Belfast Constituency19211925192919333437193840424319454919495019535619585960611962196519697071East Belfast / B Pottinger (1929)Bates UBeattie NILJB IndLJB NILJB InLJB FLJB InLRodgers UBoyd NILCardwell UEast Belfast / B Bloomfield (1929)H. Dixon UD. Dixon UScott UEast Belfast / B Dock (1929)Donald UGyle IUBlakiston-Houston UMidgley NILClark UDowney NILCole UMorgan ILOliver UFitt ILGF RLGF SDLPEast Belfast / B Victoria (1929)Duff UBates UAlexander UW. Henderson UBleakley NILBradford UNorth Belfast / B Clifton (1929)Campbell US. Hall-Thompson UPorter IUKinahan UMorgan UL. Hall-Thompson IUNorth Belfast / B Oldpark (1929)McGuffin UKyle NILHungerford UGetgood NILMorgan USimpson NILNorth Belfast / B Duncairn (1929)Grant UHanna UFitzsimmons UNorth Belfast / B Shankill (1929)McKeown UT. Henderson IUTH IUATH IUHolmes UBoal UDB IUDB DUPSouth BelfastMoles USouth BelfastPollock USouth BelfastMcCullagh USouth BelfastMcMordie UWest BelfastBurn UWest BelfastLynn UWest BelfastTwaddell UWest BelfastDevlin U
Down Constituency192119251929193319381945194919531958196219651969DownCraig UDownde Valera SFDownAndrews UDownLavery UDownMulholland UDownMcBride UDownMcMullan UDownO'Neill N
Fermanagh and Tyrone Constituency192119251929193319381945194919531958196219651969Fermanagh and TyroneGriffith SFFermanagh and TyroneArchdale UFermanagh and TyroneCoote UFermanagh and TyroneMilroy SFFermanagh and TyroneMiller UFermanagh and TyroneCooper UFermanagh and TyroneO'Mahony SFFermanagh and TyroneHarbison N
Londonderry Constituency192119251929193319381945194919531958196219651969LondonderryAnderson ULondonderryMacNeill SFLondonderryChichester ULondonderryMark ULondonderryLeeke N
Queen's University Constituency192119251929193319381945194919531958196219651969Queen's University of BelfastCampbell UQueen's University of BelfastJohnstone UQueen's University of BelfastRobb UQueen's University of BelfastMorrison U
Sources: Northern Ireland Parliamentary Election Results 1921–1972, compiled and edited by Sydney Elliott (Political Reference Publications 1973) For the exact definition of constituency boundaries see http://www.election.demon.co.uk/stormont/boundaries.html