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Gilwern & Llanfoist

Middle area

North west Monmouthshire. 8,655 people (mid-2024 estimate) in 56 square kilometres.

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Radon Affected Area by middle area

Worked out by Open Index · 2022

Under 1%90% or more

About 96% of people in Gilwern & Llanfoist live in a 1 km square that the radon atlas marks as a radon Affected Area.

Median sale price
£328,750
Joint 2,964th most expensive of 7,259
Worked out by Open Index
Population
8,520
Joint 2,710th most populated of 9,448
ONS Census 2021 · 2021
People in radon Affected Area squares
96%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
72.5%
UK 87.8%
Ofcom · Jan 2026

Recorded crime in Gilwern & Llanfoist

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Gilwern & Llanfoist at a rate of 69.4 per 1,000 people.

That compares with 80.0 per 1,000 people across Monmouthshire.

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

Recorded by police, 12 months to August 2026
Kind of crimeRecorded
Violence and sexual offences185
Other crime174
Anti-social behaviour109
Criminal damage and arson54
Shoplifting25
Burglary23
Vehicle crime23
Drug offences6
Robbery1
Theft from the person1

Source: police.uk, 12 months to August 2026

How Gilwern & Llanfoist compares

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

Gilwern & LlanfoistMiddle
Median sale price11 middle areas, Monmouthshire · 2025
Median sale price: every middle area in Monmouthshire11 areas from £250,000 to £450,000. The middle area is £325,000. Gilwern & Llanfoist is £328,750.
£328,7505th most expensive
Population11 middle areas, Monmouthshire · 2021
Population: every middle area in Monmouthshire11 areas from 7,140 to 11,049. The middle area is 8,313. Gilwern & Llanfoist is 8,520.
8,5203rd most populated
People in radon Affected Area squares11 middle areas, Monmouthshire · 2022
People in radon Affected Area squares: every middle area in Monmouthshire11 areas from 28.0% to 100.0%. The middle area is 97.0%. Gilwern & Llanfoist is 96.0%.
96%5th fewest people in radon Affected Areas
Gigabit broadband coverage11 middle areas, Monmouthshire · Jan 2026
Gigabit broadband coverage: every middle area in Monmouthshire11 areas from 55.0% to 97.2%. The middle area is 74.2%. Gilwern & Llanfoist is 72.5%.
72.5%4th lowest

Is Gilwern & Llanfoist safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Gilwern & Llanfoist at a rate of 69.4 per 1,000 people.

That compares with 80.0 per 1,000 people across Monmouthshire.

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

In August 2026 alone, 47 cases of crime and anti-social behaviour were recorded in Gilwern & Llanfoist.

In the 12 months to August 2026, the most common types were violence and sexual offences (185), other crime (174) and anti-social behaviour (109).

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 Monmouthshire

These figures are published for the whole of Monmouthshire, not for each middle area, so they describe all of Monmouthshire and not Gilwern & Llanfoist alone. See Monmouthshire

Average house price
£328,937
Up 0.9% in a year
HM Land Registry · Aug 2026
Median full-time pay
£41,529
107th highest paid of 348
ONS earnings survey · 2025
House price to pay
7.9×
Joint 135th least affordable of 348
Worked out by Open Index
Population estimate
95,329
Up 0.2% in a year
ONS population estimates · 2025
Gilwern & Llanfoist in brief

The median price paid for a home in Gilwern & Llanfoist was £328,750 in 2025.

Gilwern & Llanfoist had 8,520 usual residents at the census.

About 96% of people in Gilwern & Llanfoist live in a 1 km square that the radon atlas marks as a radon Affected Area.

In Gilwern & Llanfoist, 72.5% of homes and businesses could get gigabit-capable broadband in January 2026.