# Northern Ireland Parliament constituencies

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.
In 1921–29 the 52 provincial Members of Parliament were elected using proportional representation by the single transferable vote in multi member constituencies. The constituencies which returned one or two members to the UK Parliament, between 1922 and 1950, were used for Northern Ireland devolved elections in the 1921–29 period.
Between 1929 and 1969 there were 48 single member constituencies, using the first past the post method of election. The non-territorial University constituency continued to return 4 members using the single transferable vote.
For the 1969 election 4 new territorial constituencies were created to replace the University seats. 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

| Constituency | 1921 | 1925 | 1929 | 1933 | 37 | 1938 | 39 | 43 | 45 | 1945 | 46 | 1949 | 50 | 51 | 1953 | 1958 | 60 | 1962 | 1965 | 68 | 1969 | 70 | 71 | 72 |
| Antrim / South Antrim (1929) | Barbour U | Barbour U | Barbour U | Barbour U | Barbour U | Barbour U | Barbour U | Barbour U | Barbour U | Barbour U | Barbour U | Barbour U | Barbour U | McConnell U | McConnell U | McConnell U | McConnell U | McConnell U | McConnell U | Ferguson U | Ferguson U | Beattie PU | --> DUP | --> DUP |
| Antrim / Antrim Borough (1929) | H. O'Neill U | H. O'Neill U | H. Minford U | H. Minford U | H. Minford U | H. Minford U | H. Minford U | H. Minford U | H. Minford U | H. Minford U | H. Minford U | H. Minford U | H. Minford U | N. Minford U | N. Minford U | N. Minford U | N. Minford U | N. Minford U | N. Minford U | N. Minford U | N. Minford U | N. Minford U | N. Minford U | N. Minford U |
| Antrim / Larne (1929) | Hanna U | Hanna U | Hanna U | Hanna U | Robinson U | Robinson U | Robinson U | Robinson U | Robinson U | Topping U | Topping U | Topping U | Topping U | Topping U | Topping U | Topping U | Craig U | Craig U | Craig U | Craig U | Craig U | Craig U | Craig U | Craig U |
| Antrim / Mid Antrim (1929) | Crawford U | Crawford U | Crawford U | Crawford U | Crawford U | J. Patrick U | J. Patrick U | J. Patrick U | J. Patrick U | J. Patrick U | J. Patrick U | Wilson U | Wilson U | Wilson U | Simpson U | Simpson U | Simpson U | Simpson U | Simpson U | Simpson U | Simpson U | Simpson U | Simpson U | Simpson U |
| Antrim / Bann Side (1929) | Megaw U | Henderson UnbT | Young U | Young U | Young U | Young U | M. Patrick U | M. Patrick U | M. Patrick U | M. Patrick U | T. O'Neill U | T. O'Neill U | T. O'Neill U | T. O'Neill U | T. O'Neill U | T. O'Neill U | T. O'Neill U | T. O'Neill U | T. O'Neill U | T. O'Neill U | T. O'Neill U | Paisley PU | --> DUP | --> DUP |
| Antrim / Carrick (1929) | Gordon U | Gordon U | Gordon U | Gordon U | Gordon U | Gordon U | Gordon U | Campbell U | Curran U | Curran U | Curran U | Curran U | Hunter U | Hunter U | Hunter U | Hunter U | Hunter U | Hunter U | Ardill U | Ardill U | Dickson U | Dickson U | Dickson U | Dickson U |
| Antrim / North Antrim (1929) | Devlin N | McAllister N | Lynn U | Lynn U | Lynn U | Lynn U | Lynn U | Lynn U | McCleery U | McCleery U | McCleery U | McCleery U | McCleery U | McCleery U | McCleery U | P. O'Neill U | P. O'Neill U | P. O'Neill U | P. O'Neill U | P. O'Neill U | P. O'Neill U | P. O'Neill U | P. O'Neill U | --> A |

### Belfast

| Constituency | 1921 | 1925 | 1929 | 1933 | 34 | 37 | 1938 | 40 | 42 | 43 | 1945 | 49 | 1949 | 50 | 1953 | 56 | 1958 | 59 | 60 | 61 | 1962 | 1965 | 1969 | 70 | 71 |
| East Belfast / B Pottinger (1929) | Bates U | Beattie NIL | Beattie NIL | Beattie NIL | JB IndL | JB IndL | JB IndL | JB IndL | JB NIL | JB InL | JB FL | JB InL | Rodgers U | Rodgers U | Rodgers U | Rodgers U | Boyd NIL | Boyd NIL | Boyd NIL | Boyd NIL | Boyd NIL | Boyd NIL | Cardwell U | Cardwell U | Cardwell U |
| East Belfast / B Bloomfield (1929) | H. Dixon U | H. Dixon U | H. Dixon U | H. Dixon U | H. Dixon U | H. Dixon U | H. Dixon U | H. Dixon U | H. Dixon U | H. Dixon U | H. Dixon U | H. Dixon U | H. Dixon U | D. Dixon U | D. Dixon U | D. Dixon U | D. Dixon U | D. Dixon U | D. Dixon U | Scott U | Scott U | Scott U | Scott U | Scott U | |
| East Belfast / B Dock (1929) | Donald U | Gyle IU | Blakiston-Houston U | Midgley NIL | Midgley NIL | Midgley NIL | Clark U | Clark U | Clark U | Clark U | Downey NIL | Downey NIL | Cole U | Cole U | Morgan IL | Morgan IL | Oliver U | Oliver U | Oliver U | Oliver U | Fitt IL | GF RL | GF RL | GF SDLP | GF SDLP |
| East Belfast / B Victoria (1929) | Duff U | Bates U | Bates U | Bates U | Bates U | Bates U | Bates U | Bates U | Bates U | Bates U | Alexander U | Alexander U | Alexander U | Alexander U | W. Henderson U | W. Henderson U | Bleakley NIL | Bleakley NIL | Bleakley NIL | Bleakley NIL | Bleakley NIL | Bradford U | Bradford U | Bradford U | Bradford U |
| North Belfast / B Clifton (1929) | Campbell U | Campbell U | S. Hall-Thompson U | S. Hall-Thompson U | S. Hall-Thompson U | S. Hall-Thompson U | S. Hall-Thompson U | S. Hall-Thompson U | S. Hall-Thompson U | S. Hall-Thompson U | S. Hall-Thompson U | S. Hall-Thompson U | S. Hall-Thompson U | S. Hall-Thompson U | Porter IU | Porter IU | Kinahan U | Morgan U | Morgan U | Morgan U | Morgan U | Morgan U | L. Hall-Thompson IU | L. Hall-Thompson IU | L. Hall-Thompson IU |
| North Belfast / B Oldpark (1929) | McGuffin U | Kyle NIL | Hungerford U | Hungerford U | Hungerford U | Hungerford U | Hungerford U | Hungerford U | Hungerford U | Hungerford U | Getgood NIL | Getgood NIL | Morgan U | Morgan U | Morgan U | Morgan U | Simpson NIL | Simpson NIL | Simpson NIL | Simpson NIL | Simpson NIL | Simpson NIL | Simpson NIL | Simpson NIL | Simpson NIL |
| North Belfast / B Duncairn (1929) | Grant U | Grant U | Grant U | Grant U | Grant U | Grant U | Grant U | Grant U | Grant U | Grant U | Grant U | Hanna U | Hanna U | Hanna U | Hanna U | Fitzsimmons U | Fitzsimmons U | Fitzsimmons U | Fitzsimmons U | Fitzsimmons U | Fitzsimmons U | Fitzsimmons U | Fitzsimmons U | Fitzsimmons U | |
| North Belfast / B Shankill (1929) | McKeown U | T. Henderson IU | T. Henderson IU | T. Henderson IU | T. Henderson IU | TH IUA | TH IUA | TH IU | TH IU | TH IU | TH IU | TH IU | TH IU | TH IU | Holmes U | Holmes U | Holmes U | | Boal U | Boal U | Boal U | Boal U | Boal U | DB IU | DB DUP |
| South Belfast | Moles U | | | | | | | | | | | | | | | | | | | | | | | | |
| South Belfast | Pollock U | | | | | | | | | | | | | | | | | | | | | | | | |
| South Belfast | McCullagh U | | | | | | | | | | | | | | | | | | | | | | | | |
| South Belfast | McMordie U | | | | | | | | | | | | | | | | | | | | | | | | |
| West Belfast | Burn U | | | | | | | | | | | | | | | | | | | | | | | | |
| West Belfast | Lynn U | | | | | | | | | | | | | | | | | | | | | | | | |
| West Belfast | Twaddell U | | | | | | | | | | | | | | | | | | | | | | | | |
| West Belfast | Devlin U | | | | | | | | | | | | | | | | | | | | | | | | |

### Down

| Constituency | 1921 |
| Down | Craig U |
| Down | de Valera SF |
| Down | Andrews U |
| Down | Lavery U |
| Down | Mulholland U |
| Down | McBride U |
| Down | McMullan U |
| Down | O'Neill N |

### Fermanagh and Tyrone

| Constituency | 1921 |
| Fermanagh and Tyrone | Griffith SF |
| Fermanagh and Tyrone | Archdale U |
| Fermanagh and Tyrone | Coote U |
| Fermanagh and Tyrone | Milroy SF |
| Fermanagh and Tyrone | Miller U |
| Fermanagh and Tyrone | Cooper U |
| Fermanagh and Tyrone | O'Mahony SF |
| Fermanagh and Tyrone | Harbison N |

### Londonderry

| Constituency | 1921 |
| Londonderry | Anderson U |
| Londonderry | MacNeill SF |
| Londonderry | Chichester U |
| Londonderry | Mark U |
| Londonderry | Leeke N |

### Queen's University

| Constituency | 1921 |
| Queen's University of Belfast | Campbell U |
| Queen's University of Belfast | Johnstone U |
| Queen's University of Belfast | Robb U |
| Queen's University of Belfast | Morrison 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