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South Down

Constituency

South Northern Ireland. About 106,539 people (mid-2024 estimate) in 1,122 square kilometres.

MP for South Down

Chris HazzardSinn FéinMP since

They won by 9,280 votes on a 59.3% turnout.

As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

Open in map

Radon Affected Area by constituency

Worked out by Open Index · 2022

Under 1%90% or more

About 85% of people in South Down live in a 1 km square that the radon atlas marks as a radon Affected Area.

Majority, 2024 general election
20.5%
Joint 207th largest majority of 650
House of Commons Library · Jul 2024
Turnout, 2024 general election
59.3%
Joint 298th lowest turnout of 650
House of Commons Library · Jul 2024
Population
105,241
226th most populated of 650
ONS Census 2021 · 2021
People in radon Affected Area squares
85%
UK 44%
Worked out by Open Index

2024 general election result

Candidates in South Down at the general election on 4 July 2024, in finishing order
CandidatePartyVotesShare
Chris HazzardElectedSinn Féin19,69843.5%
Colin McGrathSocial Democratic & Labour Party10,41823.0%
Diane ForsytheDemocratic Unionist Party7,34916.2%
Andrew McMurrayAlliance3,1877.0%
Jim WellsTraditional Unionist Voice1,8934.2%
Michael O'LoanUlster Unionist Party1,4113.1%
Rosemary McGloneAontú7971.8%
Declan WalshGreen Party Northern Ireland4441.0%
Hannah WestroppConservative460.1%
Electorate
76,248
Turnout
59.3%
Majority
9,280 (20.5%)
Valid votes
45,243
Rejected ballots
228

Polling day . Shares are of valid votes; turnout is valid votes as a share of the electorate. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: House of Commons Library, UK Parliament election results. The result from the House of Commons Library

How South Down compares

Each dot is a constituency. The black line marks the middle one.

South DownMiddle
Majority, 2024 general election650 constituencies, UK · Jul 2024
Majority, 2024 general election: every constituency in UK650 areas from 0.0% to 60.6%. The middle area is 14.1%. South Down is 20.5%.
20.5%joint 207th largest majority
Turnout, 2024 general election650 constituencies, UK · Jul 2024
Turnout, 2024 general election: every constituency in UK650 areas from 40.0% to 75.2%. The middle area is 60.0%. South Down is 59.3%.
59.3%joint 298th lowest turnout
Population650 constituencies, UK · 2021
Population: every constituency in UK650 areas from 26,159 to 151,876. The middle area is 100,988. South Down is 105,241.
105,241226th most populated
People in radon Affected Area squares650 constituencies, UK · 2022
People in radon Affected Area squares: every constituency in UK650 areas from 0.0% to 100.0%. The middle area is 39.0%. South Down is 85.0%.
85%joint 140th most people in radon Affected Areas

Every constituency ranked: population and people in radon affected area squares.

What is the population of South Down?

South Down had 105,241 usual residents at the census.

South Down is the 226th most populated of 650 in the UK.

Figures for the whole of Newry, Mourne and Down

Most of South Down lies in Newry, Mourne and Down. These figures are published for the whole of Newry, Mourne and Down, not for constituencies, so they describe the council and not South Down itself. See Newry, Mourne and Down

Average house price
£220,572
Up 12.8% in a year
HM Land Registry · Jul 2026
Population estimate
182,884
Down 0.1% in a year
ONS population estimates · 2025
Female life expectancy
83.2years
UK 83.0 years
ONS life expectancy · 2022 to 2024
Gigabit broadband coverage
95.1%
UK 87.8%
Ofcom · Jan 2026
South Down in brief

The winner in South Down had a majority of 20.5% of valid votes at the general election on 4 July 2024.

Turnout in South Down at the general election on 4 July 2024 was 59.3%.

South Down had 105,241 usual residents at the census.

About 85% of people in South Down live in a 1 km square that the radon atlas marks as a radon Affected Area.