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South Down

Constituency

South Northern Ireland. About 106,539 people in 1,122 square kilometres.

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Population by constituency

Census 2021, England and Wales

Under 93k114k or more

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

Population
105,241
226th highest of 650
ONS Census 2021 · 2021
Aged 15 to 64
62.1%
236th lowest of 650
ONS Census 2021 · 2021
Aged 65 and over
16.9%
214th lowest of 650
ONS Census 2021 · 2021
Aged under 15
21.0%
41st highest of 650
ONS Census 2021 · 2021

How South Down compares

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

South DownMiddle
Population650 constituencys, 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 highest
Aged 15 to 64650 constituencys, UK · 2021
Aged 15 to 64: every constituency in UK650 areas from 52.3% to 82.1%. The middle area is 63.1%. South Down is 62.1%.
62.1%joint 236th lowest
Aged 65 and over650 constituencys, UK · 2021
Aged 65 and over: every constituency in UK650 areas from 5.0% to 34.6%. The middle area is 19.3%. South Down is 16.9%.
16.9%joint 214th lowest
Aged under 15650 constituencys, UK · 2021
Aged under 15: every constituency in UK650 areas from 9.7% to 24.9%. The middle area is 17.0%. South Down is 21.0%.
21.0%joint 41st highest

Every constituency ranked: population, aged 15 to 64, aged 65 and over and aged under 15.

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
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
Claimant rate
2.6%
UK 3.9%
ONS via Nomis · Aug 2026
South Down in brief

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

62.1% of residents in South Down were aged 15 to 64 at the census.

16.9% of residents in South Down were aged 65 or over at the census.

21.0% of residents in South Down were aged under 15 at the census.