List of parliamentary constituencies in Northern Ireland

Last updated

Northern Ireland is divided into 18 Parliamentary constituencies: 4 borough constituencies in Belfast and 14 county constituencies elsewhere. Section 33 of the Northern Ireland Act 1998 provides that the constituencies for the Northern Ireland Assembly are the same as the constituencies that are used for the United Kingdom Parliament. [1] Parliamentary constituencies are not used for local government, which is instead carried out by 11 district councils; these often have different boundaries.


Each constituency returns one Member of Parliament (MP) to the House of Commons at Westminster and five Members of the Legislative Assembly (MLAs) to the devolved Northern Ireland Assembly at Stormont. Six MLAs were returned per constituency until the Assembly Members (Reduction of Numbers) Act (Northern Ireland) 2016 reduced the number to five, effective from the 2017 Assembly election. [2]

NI Parliamentary Constituencies 2010.svg

2019 general election

   Democratic Unionist    Sinn Féin    Social Democratic and Labour    Ulster Unionist    Alliance Party

Name [nb 1] Electorate [3] Majority [nb 2] Member of Parliament Unionist %Nationalist %Other %Map
Belfast East BC 66,2451,819 Gavin Robinson
Belfast North BC 72,2251,943 John Finucane
Belfast South BC 69,98415,401 Claire Hanna 27.258.414.3
Belfast West BC 65,64414,672 Paul Maskey 13.565.720.9
East Antrim CC 64,8306,706 Sammy Wilson
East Londonderry CC 69,2469,607 Gregory Campbell 49.335.715.1
Fermanagh & South Tyrone CC 72,84857 Michelle Gildernew
Foyle CC 74,34617,110 Colum Eastwood 12.482.05.5
Lagan Valley CC 75,7356,499 Jeffrey Donaldson 64.96.328.8
Mid Ulster CC 70,4499,537 Francie Molloy 30.460.29.4
Newry & Armagh CC 81,2269,287 Mickey Brady
North Antrim CC 77,13412,721 Ian Paisley, Jr. 65.919.514.7
North Down CC 67,0992,968 Stephen Farry
South Antrim CC 71,7112,689 Paul Girvan 64.316.719.1
South Down CC 79,1751,620 Chris Hazzard 21.964.113.9
Strangford CC 66,9287,071 Jim Shannon 62.66.830.5
Upper Bann CC 82,8878,210 Carla Lockhart 53.433.812.9
West Tyrone CC 66,2597,478 Órfhlaith Begley 28.760.411.0
  1. BC denotes borough constituency, CC denotes county constituency.
  2. The majority is the number of votes the winning candidate receives more than their nearest rival.

Data from the BBC Election Website. For full official results see the Electoral Office of Northern Ireland.

Historical representation by party

Where a cell is marked → (with a different colour of frame to the preceding cell) it indicates that the previous MP continued to sit under a new party affiliation. Changes are dated in the header row: either a general election (four-figure year, bold, link) or by-election or change in affiliation (two-figure year, italic, link or details appear on hover).

1801 to 1832 (22 MPs)


   Tory    Whig

Constituency 1801 1802 1806 07 1807 1812 14 16 1818 19 1820 22 1826 1830 1831
Antrim Staples O'Neill
MacNaghten F. Seymour-Conway H. H. Seymour R. Seymour-Conway MacNaghten G. Chichester
Belfast J. May S. May Michel A. Chichester G. Chichester A. Chichester
Carrickfergus Dalway S. Chichester Craig A. Chichester G. Chichester A. Chichester Hill
Lisburn Hatton F. Seymour-Conway Moore Foster H. B. Seymour Meynell


   Tory    Whig

Constituency 1801 01 1802 1806 07 1807 09 1812 14 14 15 1818 1820 23 1826 1830 1831 31
Coleraine W. Jones * W. Jones J. Beresford G. Beresford J. Beresford Brydges Copeland
Londonderry City Alexander Hill* Ferguson
County Londonderry C. Stewart A. Stewart A. R. Stewart T. Jones
vacant Hill G. Beresford Ponsonby Dawson Bateson

* Sir George Hill, 2nd Baronet, was elected to sit as MP for both Coleraine and Londonderry City in the 1806 general election and chose to continue to sit for Londonderry City, hence the 1807 by-election, in which Walter Jones was restored to his seat.


   Tory    Whig    Independent

Constituency 1801 01 02 1802 03 1806 07 1807 09 1812 1818 1820 25 1826 1830 1831
Dungannon J. Knox C. Hamilton * C. Hamilton * J. Hamilton Cl. Hamilton Scott Holford T. Knox jnr J. J. Knox
Tyrone Lowry-Corry John Stewart T. Knox snr John Stewart H. Lowry-Corry
James Stewart T. Knox jnr W. Stewart H. Stewart

* At both the 1802 and 1806 elections, George Knox was returned for both Dungannon and Dublin University and chose to sit for the university seat.


   Tory    Whig

Constituency 1801 1802 1806 1807 1812 15 16 1818 19 1820 1826 1830 1831 31
Armagh Duigenan Webber Foster Stuart Goulburn Chetwynd-Talbot Brydges
County Armagh Acheson snr Richardson Caulfeild Acheson jnr
Cope Caulfeild W Brownlow Caulfeild C Brownlow*
Newry Moore Corry F Needham FJ Needham Knox

* Charles Brownlow was initially elected as a Tory but at some point changed his affiliation to sit with the Whigs.


   Tory    Whig

Constituency 1801 01 1802 05 1806 1807 12 1812 15 17 1818 1820 21 1826 1830 1831
Down R Stewart Meade Hill
Savage Ward R Stewart Forde F Stewart
Downpatrick C Rowley SC Rowley Hawthorne Ruthven* Croker Hawthorne Annesley Maxwell Ruthven

*The Parliaments of England by Henry Stooks Smith suggests that after the 1806 election there was a petition, which led to Edward Southwell Ruthven (Whig) being unseated and John Wilson Croker (Tory) being declared duly elected. Parliamentary Election Results in Ireland, 1801–1922, edited by BM Walker, does not make any reference to such a petition.



Constituency 1801 1802 02 03 06 06 1806 07 1807 1812 1818 1820 23 1826 28 1830 1831
Enniskillen Hamilton Beresford Burroughs King Fremantle Sneyd Bennet Pochin Magenis AH Cole
Fermanagh Archdall snr Archdall jnr
JW Cole GL Cole Lowry-Corry WW Cole

1832 to 1885 (29 MPs)


   Conservative    Whig    Peelite    Liberal

Constituency 1832 1835 35 1837 38 41 1841 45 45 1847 52 1852 52 53 1857
Antrim J. O'Neill Alexander E. Pakenham
G. Chichester Irving H. B. Seymour E. C. Macnaghten Macartney
Belfast A. Chichester McCanceDunbarGibson J. Tennent R. Tennent Davison
J. Tennent G. Chichester DunbarJohnson A. Chichester Cairns
Carrickfergus C. DobbsKirk Stapleton-Cotton W. Dobbs
Lisburn Meynell H. B. Seymour J. Tennent Smyth Richardson
Constituency 1859 60 63 63 1865 66 1868 69 73 1874 78 1880 85
Antrim T. Pakenham G. H. Seymour H. Seymour Chaine Sinclair
Upton E. O'Neill E. MacNaghten
Belfast Davison Getty Johnston Ewart
Cairns Lanyon McClure Corry
Carrickfergus TorrensDalwayGreer
Lisburn Richardson Barbour Verner Wallace


   Conservative    Whig    Liberal

Constituency 1832 33 1835 1837 1841 42 43 44 1847 52 1852 1857 57
Coleraine Beresford* Copeland Litton Boyd Naas Boyd
Londonderry City Ferguson
County Londonderry Jones Greer
R. Bateson R. Bateson jnr T. Bateson Clark
Constituency 1859 60 62 1865 1868 72 1874 78 1880 81 84
Coleraine Boyd Bruce Taylor Bruce
Londonderry City Ferguson McCormick Hamilton Dowse Lewis
County Londonderry Dawson Smyth McClure
Heygate Law Porter Walker

*unseated on petition


   Conservative    Peelite    Liberal

Dungannon J. Knox T. Knox T. Knox jnr W. Knox T. Dickson J. Dickson
Tyrone H. T. Lowry Corry H. W. Lowry Corry Litton T. Dickson
Stewart Hamilton Alexander Hamilton Ellison-Macartney


   Conservative    Whig    Peelite    Liberal

Armagh Dobbin CurryRawdonMooreBondMillerBondMiller Vance Beresford
County Armagh Acheson Caulfeild Close Stronge Close
Verner W. Verner jnr E. Verner Richardson
Newry Hill Brady Ellis F. J. Needham Hallewell Kirk Quinn Innes Kirk F. C. Needham Whitworth Thomson


   Conservative    Whig    Peelite    Liberal

Constituency 1832 1835 36 1837 1841 45 1847 51 1852 1857 1859 1865 67 1868 1874 78 1880 84
Down A. M. Hill A. W. B. Hill Hill-Trevor A. W. Hill
Stewart D. S. Ker Forde Crawford Vane-Tempest-Stewart R. W. Ker
Downpatrick Maxwell D. Ker D. S. Ker R. Ker Hardinge R. Ker D. S. Ker Keown Mulholland



Constituency 1832 34 1835 1837 40 1841 44 1847 51 1852 54 1857 59 1859 1865 1868 1874 1880
Enniskillen A. Cole H. Cole Whiteside J. Cole Crichton L. Cole
Fermanagh Archdall M. Archdale W. Archdale
W. Cole Brooke H. Cole Crichton

1885 to 1918 (25 MPs)


   Conservative Party    Irish Unionist then Ulster Unionist    Russellite Unionist    Independent Unionist

Constituency 1885 1886 87 1892 1895 99 1900 03 1906 Jan 1910 Dec 1910 13 15
East Antrim J. McCalmont R. McCalmont
Mid Antrim R. O'Neill A. O'Neill H. O'Neill
North Antrim Macnaghten Lewis Connor H. McCalmont Moore Glendinning Kerr-Smiley
South Antrim Ellison-Macartney Craig


   Conservative Party    Irish Unionist then Ulster Unionist    Irish Parliamentary Party (1885-90, 1900-22) / Irish National League (1890-1900)   Irish National Federation    Healyite Nationalist    Nationalist Party

Constituency 1885 86 1886 91 1892 1895 00 1900 1906 06 09 Jan 1910 Dec 1910 17 18
Mid Armagh McKane Corry Barton Lonsdale Lonsdale
North Armagh Saunderson Moore Allen
South Armagh Blane McHugh J. Campbell McKillop O'Neill Donnelly


   Conservative Party    Irish Unionist then Ulster Unionist    Independent Unionist    Liberal Unionist    Irish Parliamentary Party (1885-90, 1900-22) / Irish National League (1890-1900)   Irish National Federation    Nationalist Party    Labour Unionist

Constituency 1885 1886 89 90 92 1892 1895 96 1900 02 05 1906 07 Jan 1910 Dec 1910 14 Apr 17 Jul 17
Belfast East de Cobain Wolff McMordie Sharman-Crawford
Belfast North Ewart Harland Haslett Dixon Clark Thompson
Belfast South Johnston Sloan Chambers Lindsay
Belfast West Haslett Sexton Arnold-Forster Devlin


   Conservative Party    Irish Unionist then Ulster Unionist    Russellite Unionist    Irish Parliamentary Party (1885-90, 1900-22) / Irish National League (1890-1900)   Irish National Federation    Nationalist Party

Constituency 1885 1886 90 1892 1895 98 1900 02 05 1906 07 08 Jan 1910 10 Dec 1910
East Down Ker Rentoul Wood Craig
North Down Waring Blakiston-Houston Corbett Mitchell-Thomson
South Down Small McCartan McVeagh
West Down A. W. Hill A. Hill Liddell A. W. Hill MacCaw
Newry J. H. McCarthy Carvill Mooney


   Irish Unionist then Ulster Unionist    Russellite Unionist    Irish Parliamentary Party (1885-90, 1900-22) / Irish National League (1890-1900)   Irish National Federation

Constituency 1885 1886 1892 1895 98 1900 03 1906 Jan 1910 Dec 1910 16
North Fermanagh Redmond Dane Archdale Mitchell Fetherstonhaugh Archdale
South Fermanagh H. Campbell McGilligan Jordan Crumley


   Conservative Party    Irish Unionist then Ulster Unionist    Liberal Unionist    Liberal Party    Irish Parliamentary Party (1885-90, 1900-22) / Irish National League (1890-1900)   Irish National Federation

Constituency 1885 1886 1892 1895 99 1900 1906 Jan 1910 Dec 1910 12 13 14 16
Londonderry City Lewis J. McCarthy Ross Knox Moore Hamilton Hogg Dougherty
North Londonderry Mulholland Atkinson Barrie
South Londonderry Healy Lea Gordon Henry


   Conservative Party    Irish Unionist then Ulster Unionist    Russellite Unionist    Liberal Unionist    Liberal Party    Irish Parliamentary Party (1885-90, 1900-22) / Irish National League (1890-1900)   Irish National Federation    Nationalist Party

Constituency 1885 1886 9091 1892 1895 1900 02 1906 06 07 Jan 1910 Dec 1910 11 16 18
East Tyrone Reynolds Doogan Kettle Redmond Harbison
Mid Tyrone Kenny Murnaghan Brunskill McGhee
North Tyrone E. Hamilton F. Hamilton Hemphill Dodd Barry Russell
South Tyrone O'Brien Russell Horner Coote

1918 to 1922 (30 MPs)

   Irish Unionist then Ulster Unionist    Independent Unionist    Labour Unionist    Sinn Féin

Constituency 1918 19 19 2121 21 22 22 22 22
East Antrim R McCalmont Hanna
Mid Antrim H O'Neill
North Antrim Kerr-Smiley
South Antrim Craig
Mid Armagh Lonsdale Armstrong
North Armagh Allen
South Armagh Donnelly
Belfast Pottinger Dixon
Belfast Duncairn Carson McConnell
Belfast Cromac Lindsay
Belfast Falls Devlin
Belfast Ormeau Moles
Belfast Shankill McGuffin
Belfast St Anne's Burn
Belfast Victoria Donald
Belfast Woodvale Lynn
Queen's University Whitla
Constituency 1918 19 19 2121 21 22 22 22 22
East Down Reid
North Down Brown H Wilson Simms
South Down McVeagh
West Down D Wilson Wallace Hayes
Mid Down Craig Sharman-Crawford
North Fermanagh Archdale
South Fermanagh O'Μahony
Londonderry City MacNeill
North Londonderry Anderson Barrie Macnaghten
South Londonderry Henry Chichester Pain
Tyrone North-East Harbison
Tyrone North-West Griffith
South Tyrone Coote
Constituency 1918 19 19 2121 21 22 22 22 22

1922 to 1950 (13 MPs)

   Ulster Unionist    Ulster Progressive Unionist    Independent Unionist    New Party    Northern Ireland Labour    Independent Labour    Federation of Labour    Irish Labour    Nationalist Party

Constituency 1922 1923 1924 29 1929 31 1931 34 1935 38 39 40 43 43 1945 46 48 49
(Two members)
Craig McConnell Campbell Haughton
Armagh Allen Harden
Belfast East Dixon Harland Cole
Belfast North McConnell Somerset Neill
Belfast South Moles Stewart Gage
Belfast West Lynn Allen Browne Beattie
(Two members)
Reid Little Mullan
Simms Vane-Tempest-Stewart Smiles
Fermanagh and Tyrone
(Two members)
Harbison Pringle Harbison Healy Cunningham
Healy Falls Devlin Stewart Mulvey
Londonderry Macnaghten Ross
Queen's University of Belfast Whitla Sinclair Savory

1950 to 1983 (12 MPs)

Periodic boundary reviews commenced in 1947. [4] [5] The elections at which these were implemented are tagged with diamond suit characters, ♦.

The 1st Periodic Review boundary map can be viewed on the ARK elections website. Changes in the 2nd review were relatively minor. [6]

Unionist parties

   Ulster Unionist    Protestant Unionist (pre-1971) / Democratic Unionist (post-1971)   Vanguard Unionist / United Ulster Unionist (Mid Ulster, 1975-83)   Conservative Party    Independent Unionist    Ulster Popular Unionist

Nationalist parties

   Independent Republican    Unity    Nationalist Party    Anti H-Block (pre-1982) / Sinn Féin (post-1982)   Republican Labour    Social Democratic and Labour


   Alliance    Independent    Irish Labour

Constituency 1950 51 1951 52 53 54 1955 57 59 1959 63 1964 1966 69 1970 70717273 Feb 1974   Oct 1974 757778 1979 80 81 81 82
Antrim N H. O'Neill P. O'Neill Clark Paisley
Antrim S Savory Cunningham Molyneaux
Armagh Harden Armstrong Maginnis McCusker
Belfast E McKibbin McMaster Craig Robinson
Belfast N Hyde Mills Carson McQuade
Belfast S Gage Campbell Pounder Bradford Smyth
Belfast W Teevan 3 Beattie McLaughlin Kilfedder Fitt
Down N Smiles Ford Currie Kilfedder
Down S Orr Powell
Ferm. & S Tyr. Healy Grosvenor 1 Hamilton McManus West Maguire Sands Carron
Londonderry Ross Wellwood Chichester-Clark Ross
Mid Ulster Mulvey O'Neill Forrest 2 Devlin Dunlop


  1. The constituency was won by Philip Clarke of Sinn Féin, but he was unseated on petition on the basis that his criminal conviction (for Irish Republican Army activity) made him ineligible. Instead, the seat was awarded to the Ulster Unionist Party (UUP) candidate.
  2. The seat was originally won by Tom Mitchell of Sinn Féin, but Mitchell was subsequently unseated upon petition, on the grounds that his terrorist convictions made him ineligible to sit in Parliament. The seat was awarded to Charles Beattie of the UUP. However, Beattie in turn was also found ineligible to sit due to holding an office of profit under the crown, triggering a further by-election.
  3. Original winner of the 1950 election in that seat, James Godfrey MacManaway (UUP), disqualified due to being a clergyman. Teevan won the subsequent by-election

1983 to present (17, then 18 MPs)

3rd and 4th Review boundary maps can be viewed on the ARK elections website: 1983, 1997.

   Democratic Unionist    Sinn Féin    Social Democratic and Labour    Ulster Unionist    Alliance Party    Independent    Ulster Popular Unionist    UK Unionist Party

Constituency 1983 86 1987 90 1992 95 1997 00 2001 04 2005 10 2010 11 13 2015 2017 18 2019
Antrim East Beggs Wilson
Antrim North Paisley Paisley Jr 1
Antrim South Forsythe McCrea Burnside McCrea Kinahan Girvan
Upper Bann McCusker Trimble Simpson Lockhart
Belfast East P Robinson Long G Robinson
Belfast North Walker Dodds Finucane
Belfast South Smyth1 McDonnell Pengelly Hanna
Belfast West Adams Hendron Adams Maskey
Down North Kilfedder McCartney Hermon Farry
Down South Powell McGrady Ritchie Hazzard
Fermanagh and South Tyrone Maginnis Gildernew Elliott Gildernew
Foyle Hume Durkan McCallion Eastwood
Lagan Valley Molyneaux