Parliamentary constituencies
The United Kingdom is currently divided into 650 parliamentary constituencies. Each constituency is represented by a single Member of Parliament (MP).
- Which constituency do I live in?
- How are constituency boundaries decided?
- How many people live in each parliamentary constituency?
- Which is the largest consituency, in square km?
- Which is the smallest constituency, in square km?
- Where can I find more information about my constituency?
- Where can I find election results for my constituency?
- Can I stand for election in my constituency?
Which constituency do I live in?
To find your constituency, and the name of your MP, use your postcode to search:
To see how the UK is divided up into constituencies on a map, use the Ordnance Survey Election Maps and select the boundary option: ‘Westminster constituencies’.
The total number of UK constituencies is 650. The totals for England, Scotland, Wales and Northern Ireland are:
|
England Scotland Wales Northern Ireland |
543 57 32 18 |
How are constituency boundaries decided?
The four independent Boundary Commissions for England, Scotland, Wales and Northern Ireland review the parliamentary boundaries periodically to make sure that constituencies all have a similar number of voters, whilst respecting local ties between areas. The reviews alter constituencies to reflect rising and falling populations and changes in the boundaries of the electoral wards that comprise them.
The last review by the Boundary Commissions was completed in June 2023, and the new boundaries took effect at the 2024 UK general election.
How many people live in each parliamentary constituency?
It is the number of voters in an area (the electorate), rather than the total number of people, that is used to calculate where boundaries are drawn. Since 2024, constituencies each have an electorate of around 73,000 registered voters.
The exceptions to this are five island seats: Orkney and Shetland, Na h-Eileanan an Iar, Ynys Môn, and the two seats allocated to the Isle of Wight.
Which is the largest constituency, in square km?
Caithness, Sutherland and Easter Ross is the largest parliamentary constituency, covering 11,632 square km.
Which is the smallest constituency, in square km?
Bethnal Green and Stepney is the smallest parliamentary constituency, covering 6.8 square km.
Where can I find more information about my constituency?
The House of Commons Library publishes data for each constituency on topics such as housing, health, and energy. You can also use the constituency dashboard to find data on demographics, employment and levels of poverty in your constituency:
Where can I find election results for my constituency?
The House of Commons Library publishes election results data for the House of Commons. This includes the results by constituency since 2010.
Can I stand for election in my constituency?
To stand as a candidate in a UK Parliamentary General Election you need to be at least 18 years and be either:
- a British citizen
- a citizen of the Republic of Ireland
- a citizen of a commonwealth country who does not require leave to enter or remain in the UK, or has indefinite leave to remain in the UK
Certain people and office holders are disqualified from standing as an MP. The full list is long but includes police officers, members of the armed forces, judges and members of various public bodies.
Nomination forms for candidates are made available when there is a general election or, if the seat becomes vacant, when a by-election is held in the constituency.
For more information about elections in your constituency, or to get help registering to vote, please contact your local Electoral Registration Office .