List of parliamentary constituencies in Northern Ireland

Northern Ireland is divided into 18 Parliamentary constituencies - 4 Borough constituencies in Belfast and 14 County constituencies elsewhere. Each area returns one Member of Parliament (MP) to the House of Commons at Westminster and six Members of the Legislative Assembly (MLAs) to the devolved Northern Ireland Assembly at Stormont. Parliamentary constituencies are not used for local government, which is instead carried out by 26 councils; these often have different boundaries.

Name	Current boundaries	Name
Belfast East BC Belfast North BC Belfast South BC Belfast West BC East Antrim CC East Londonderry CC Fermanagh and South Tyrone CC Foyle CC Lagan Valley CC		Mid Ulster CC Newry and Armagh CC North Antrim CC North Down CC South Antrim CC South Down CC Strangford CC Upper Bann CC West Tyrone CC

[edit] 2005 general election

Name^{[nb 1]}	Electorate	Majority^{[nb 2]}
Belfast East BC	52,899	5,877	Peter Robinson α	Reg Empey ε
Belfast North BC	52,535	5,188	Nigel Dodds α	Gerry Kelly β
Belfast South BC	52,218	1,235	Alasdair McDonnell δ	Jimmy Spratt α
Belfast West BC	53,536	19,315	Gerry Adams β	Alex Attwood δ
East Antrim CC	57,966	7,304	Sammy Wilson α	Roy Beggs ε
East Londonderry CC	58,461	7,727	Gregory Campbell α	David McClarty ε
Fermanagh and South Tyrone CC	66,415	4,582	Michelle Gildernew β	Arlene Foster α
Foyle CC	68,758	5,957	Mark Durkan δ	Mitchel McLaughlin β
Lagan Valley CC	70,238	14,117	Jeffrey Donaldson α	Basil McCrea ε
Mid Ulster CC	62,088	10,976	Martin McGuinness β	Ian McCrea α
Newry and Armagh CC	71,771	8,195	Conor Murphy β	Dominic Bradley δ
North Antrim CC	73,938	17,965	Ian Paisley α	Philip McGuigan β
North Down CC	59,358	4,944	Sylvia Hermon ε	Peter Weir α
South Antrim CC	66,580	3,448	William McCrea α	David Burnside ε
South Down CC	73,175	9,140	Eddie McGrady δ	Caitriona Ruane β
Strangford CC	71,509	1,886	Iris Robinson α	Gareth McGimpsey ε
Upper Bann CC	71,645	5,398	David Simpson α	David Trimble ε
West Tyrone CC	59,842	5,005	Pat Doherty β	Kieran Deeny Ω

Constituency	Unionist vote	Republican/Nationalist vote
North Down	85%	3.7%
Strangford	78%	9.3%
Lagan Valley	76%	13.6%
North Antrim	69%	28%
South Antrim	66%	24%
East Antrim	67%	8%
Upper Bann	62%	33%
East Londonderry	64%	32%
Belfast North	52%	42%
Belfast East	80%	6%
Belfast West	13%	86%
Belfast South	50%	41%
Foyle	16.5%	79%
South Down	27%	79%
Fermanagh, South Tyrone	47%	53%
Mid Ulster	34%	63%
West Tyrone	16%	57%
Newry and Armagh	30%	65%

^ BC denotes borough constituency, CC denotes county constituency.
^ The majority is the number of votes the winning candidate receives more than their nearest rival.