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Llandaff North

Ward

North Cardiff. About 8,668 people (mid-2024 estimate) in 1.9 square kilometres.

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Radon Affected Area by ward

Worked out by Open Index · 2022

Under 1%90% or more

About 51% of people in Llandaff North live in a 1 km square that the radon atlas marks as a radon Affected Area.

Population
8,423
3,186th most populated of 8,397
ONS Census 2021 · 2021
People in radon Affected Area squares
51%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
98.4%
UK 87.8%
Ofcom · Jan 2026
Claimant rate
4.3%
UK 3.9%
ONS via Nomis · Aug 2026

How Llandaff North compares

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

Llandaff NorthMiddle
Population28 wards, Cardiff · 2021
Population: every ward in Cardiff28 areas from 7,094 to 21,823. The middle area is 11,920. Llandaff North is 8,423.
8,4232nd least populated
People in radon Affected Area squares28 wards, Cardiff · 2022
People in radon Affected Area squares: every ward in Cardiff28 areas from 0.0% to 100.0%. The middle area is 82.0%. Llandaff North is 51.0%.
51%10th fewest people in radon Affected Areas
Gigabit broadband coverage28 wards, Cardiff · Jan 2026
Gigabit broadband coverage: every ward in Cardiff28 areas from 80.7% to 99.6%. The middle area is 96.3%. Llandaff North is 98.4%.
98.4%3rd highest
Claimant rate28 wards, Cardiff · Aug 2026
Claimant rate: every ward in Cardiff28 areas from 1.2% to 6.9%. The middle area is 3.6%. Llandaff North is 4.3%.
4.3%11th highest

Is Llandaff North safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Llandaff North at a rate of 99.0 per 1,000 people.

That compares with 112.2 per 1,000 people across Cardiff.

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

In August 2026 alone, 80 cases of crime and anti-social behaviour were recorded in Llandaff North.

In the 12 months to August 2026, the most common types were violence and sexual offences (300), anti-social behaviour (209) and other crime (167).

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 Cardiff

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

Average house price
£272,252
Up 2.7% in a year
HM Land Registry · Jul 2026
Median full-time pay
£36,946
121st lowest paid of 348
ONS earnings survey · 2025
House price to pay
7.4×
Joint 167th least affordable of 348
Worked out by Open Index
Population estimate
381,516
Down 0.1% in a year
ONS population estimates · 2025
Llandaff North in brief

Llandaff North had 8,423 usual residents at the census.

About 51% of people in Llandaff North live in a 1 km square that the radon atlas marks as a radon Affected Area.

In Llandaff North, 98.4% of homes and businesses could get gigabit-capable broadband in January 2026.

In Llandaff North, 4.3% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026.