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Newport West and Islwyn

Constituency

South east Wales. About 103,100 people in 146 square kilometres.

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Population by constituency

Census 2021, England and Wales

Under 93k114k or more

Newport West and Islwyn had 101,566 usual residents at the census.

Population
101,566
308th highest of 650
ONS Census 2021 · 2021
Aged 15 to 64
62.5%
268th lowest of 650
ONS Census 2021 · 2021
Aged 65 and over
19.8%
289th highest of 650
ONS Census 2021 · 2021
Aged under 15
17.7%
238th highest of 650
ONS Census 2021 · 2021

How Newport West and Islwyn compares

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

Newport West and IslwynMiddle
Population650 constituencys, UK · 2021
Population: every constituency in UK650 areas from 26,159 to 151,876. The middle area is 100,988. Newport West and Islwyn is 101,566.
101,566308th 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%. Newport West and Islwyn is 62.5%.
62.5%joint 268th 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%. Newport West and Islwyn is 19.8%.
19.8%joint 289th highest
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%. Newport West and Islwyn is 17.7%.
17.7%joint 238th highest

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

Figures for the whole of Caerphilly

Most of Newport West and Islwyn lies in Caerphilly. These figures are published for the whole of Caerphilly, not for constituencies, so they describe the council and not Newport West and Islwyn itself. See Caerphilly

Average house price
£197,542
Up 4.2% in a year
HM Land Registry · Jul 2026
Median full-time pay
£35,367
78th lowest of 348
ONS earnings survey · 2025
House price to pay
5.6×
65th most affordable of 348
Worked out by Open Index
Female life expectancy
80.6years
UK 83.0 years
ONS life expectancy · 2022 to 2024
Newport West and Islwyn in brief

Newport West and Islwyn had 101,566 usual residents at the census.

62.5% of residents in Newport West and Islwyn were aged 15 to 64 at the census.

19.8% of residents in Newport West and Islwyn were aged 65 or over at the census.

17.7% of residents in Newport West and Islwyn were aged under 15 at the census.