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Cefn Fforest and Pengam

Ward

Central Caerphilly. About 7,401 people (mid-2024 estimate) in 3.0 square kilometres.

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Radon Affected Area by ward

Worked out by Open Index · 2022

Under 1%90% or more

About 91% of people in Cefn Fforest and Pengam live in a 1 km square that the radon atlas marks as a radon Affected Area.

Population
7,395
3,761st most populated of 8,397
ONS Census 2021 · 2021
People in radon Affected Area squares
91%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
94.2%
UK 87.8%
Ofcom · Jan 2026
Claimant rate
3.7%
UK 3.9%
ONS via Nomis · Aug 2026

How Cefn Fforest and Pengam compares

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

Cefn Fforest and PengamMiddle
Population31 wards, Caerphilly · 2021
Population: every ward in Caerphilly31 areas from 1,997 to 12,217. The middle area is 5,486. Cefn Fforest and Pengam is 7,395.
7,3958th most populated
People in radon Affected Area squares31 wards, Caerphilly · 2022
People in radon Affected Area squares: every ward in Caerphilly31 areas from 0.0% to 100.0%. The middle area is 95.0%. Cefn Fforest and Pengam is 91.0%.
91%joint 12th fewest people in radon Affected Areas
Gigabit broadband coverage31 wards, Caerphilly · Jan 2026
Gigabit broadband coverage: every ward in Caerphilly31 areas from 42.6% to 98.8%. The middle area is 93.3%. Cefn Fforest and Pengam is 94.2%.
94.2%joint 13th highest
Claimant rate31 wards, Caerphilly · Aug 2026
Claimant rate: every ward in Caerphilly31 areas from 1.8% to 5.6%. The middle area is 3.5%. Cefn Fforest and Pengam is 3.7%.
3.7%joint 9th highest

Is Cefn Fforest and Pengam safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Cefn Fforest and Pengam at a rate of 119.0 per 1,000 people.

That compares with 107.3 per 1,000 people across Caerphilly.

Across Wales as a whole, the recorded crime rate was 96.7 per 1,000 people.

In August 2026 alone, 94 cases of crime and anti-social behaviour were recorded in Cefn Fforest and Pengam.

In the 12 months to August 2026, the most common types were violence and sexual offences (336), other crime (177) and anti-social behaviour (134).

Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.

Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.

Figures for the whole of Caerphilly

These figures are published for the whole of Caerphilly, not for each ward, so they describe all of Caerphilly and not Cefn Fforest and Pengam alone. See Caerphilly

Average house price
£198,545
Up 4.4% in a year
HM Land Registry · Aug 2026
Median full-time pay
£35,367
78th lowest paid of 348
ONS earnings survey · 2025
House price to pay
5.6×
Joint 66th most affordable of 348
Worked out by Open Index
Population estimate
176,078
Down 0.1% in a year
ONS population estimates · 2025
Cefn Fforest and Pengam in brief

Cefn Fforest and Pengam had 7,395 usual residents at the census.

About 91% of people in Cefn Fforest and Pengam live in a 1 km square that the radon atlas marks as a radon Affected Area.

In Cefn Fforest and Pengam, 94.2% of homes and businesses could get gigabit-capable broadband in January 2026.

In Cefn Fforest and Pengam, 3.7% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026.