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Aberdyfi

Ward

South east Gwynedd. About 1,050 people (mid-2024 estimate) in 53 square kilometres.

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Radon Affected Area by ward

Worked out by Open Index · 2022

Under 1%90% or more

About 100% of people in Aberdyfi live in a 1 km square that the radon atlas marks as a radon Affected Area.

Population
1,015
13th least populated of 8,397
ONS Census 2021 · 2021
People in radon Affected Area squares
100%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
11.1%
UK 87.8%
Ofcom · Jan 2026
Aged 15 to 64
56.8%
Joint 960th lowest of 8,397
ONS Census 2021 · 2021

How Aberdyfi compares

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

AberdyfiMiddle
Population65 wards, Gwynedd · 2021
Population: every ward in Gwynedd65 areas from 1,015 to 6,710. The middle area is 1,656. Aberdyfi is 1,015.
1,015least populated
People in radon Affected Area squares65 wards, Gwynedd · 2022
People in radon Affected Area squares: every ward in Gwynedd65 areas from 0.0% to 100.0%. The middle area is 100.0%. Aberdyfi is 100.0%.
100%joint most people in radon Affected Areas
Gigabit broadband coverage65 wards, Gwynedd · Jan 2026
Gigabit broadband coverage: every ward in Gwynedd65 areas from 11.1% to 99.2%. The middle area is 79.3%. Aberdyfi is 11.1%.
11.1%lowest
Aged 15 to 6465 wards, Gwynedd · 2021
Aged 15 to 64: every ward in Gwynedd65 areas from 47.5% to 86.0%. The middle area is 60.0%. Aberdyfi is 56.8%.
56.8%14th lowest

What is the population of Aberdyfi?

Aberdyfi had 1,015 usual residents at the census.

Aberdyfi is the 13th least populated of 8,397 in the UK.

Figures for the whole of Gwynedd

These figures are published for the whole of Gwynedd, not for each ward, so they describe all of Gwynedd and not Aberdyfi alone. See Gwynedd

Average house price
£204,974
Up 5.5% in a year
HM Land Registry · Jul 2026
Median full-time pay
£32,868
17th lowest paid of 348
ONS earnings survey · 2025
House price to pay
6.2×
Joint 106th most affordable of 348
Worked out by Open Index
Population estimate
120,295
Down 0.3% in a year
ONS population estimates · 2025
Aberdyfi in brief

Aberdyfi had 1,015 usual residents at the census.

About 100% of people in Aberdyfi live in a 1 km square that the radon atlas marks as a radon Affected Area.

In Aberdyfi, 11.1% of homes and businesses could get gigabit-capable broadband in January 2026.

56.8% of residents in Aberdyfi were aged 15 to 64 at the census.