Llangefni
Middle areaSouth Isle of Anglesey. 7,379 people (mid-2024 estimate) in 46 square kilometres.
Radon Affected Area by middle area
Worked out by Open Index · 2022
About 69% of people in Llangefni live in a 1 km square that the radon atlas marks as a radon Affected Area.
Recorded crime in Llangefni
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Llangefni at a rate of 105.4 per 1,000 people.
That compares with 73.9 per 1,000 people across Isle of Anglesey.
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.
| Kind of crime | Recorded |
|---|---|
| Violence and sexual offences | 309 |
| Anti-social behaviour | 220 |
| Other crime | 79 |
| Shoplifting | 65 |
| Criminal damage and arson | 59 |
| Burglary | 17 |
| Drug offences | 17 |
| Vehicle crime | 12 |
| Robbery | 0 |
| Theft from the person | 0 |
Source: police.uk, 12 months to August 2026
How Llangefni compares
Each dot is a middle area. The black line marks the middle one.
Is Llangefni safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Llangefni at a rate of 105.4 per 1,000 people.
That compares with 73.9 per 1,000 people across Isle of Anglesey.
Across Wales as a whole, the recorded crime rate was 96.7 per 1,000 people.
In August 2026 alone, 78 cases of crime and anti-social behaviour were recorded in Llangefni.
In the 12 months to August 2026, the most common types were violence and sexual offences (309), anti-social behaviour (220) and other crime (79).
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 Isle of Anglesey
These figures are published for the whole of Isle of Anglesey, not for each middle area, so they describe all of Isle of Anglesey and not Llangefni alone. See Isle of Anglesey
Llangefni in brief
The median price paid for a home in Llangefni was £215,000 in 2025.
Llangefni had 7,039 usual residents at the census.
About 69% of people in Llangefni live in a 1 km square that the radon atlas marks as a radon Affected Area.
In Llangefni, 46.7% of homes and businesses could get gigabit-capable broadband in January 2026.