Recorded crime in LL71 is 0.6 times the Isle of Anglesey average and 0.5 times the England and Wales average. Over 5 years it has fallen 22%. Most of the harm comes from violence and sexual offences. Police data to August 2026.
Llanerchymedd, Isle of Anglesey. 1,748 residents in 1 neighbourhoods.
What it measures. How serious the crime recorded here is, not how much of it there is. Each recorded crime is weighted by the typical sentence for that kind of offence (the Office for National Statistics Crime Severity Score), so a robbery counts about 76 times a shoplifting offence. The total per resident is ranked against every neighbourhood. 10 means among the safest tenth.
Data. Street-level crime from data.police.uk, September 2016 to August 2026. Weights: ONS Crime Severity Score, year ending March 2025.
Crime severity: 0.6× the Isle of Anglesey average (0.5× the England and Wales average)
Crime only, by how serious it is. Compared with every postcode district. Higher is safer.
What it measures. One score from 1 to 10 that blends schools (33%), transport (25%), health (25%) and supermarkets (17%). Crime is not in it: it is the separate Safety score. 10 is best.
Data. Built from the four scores below, so it uses their data. Figures last rebuilt on 10 October 2026.
Based on transport, health, supermarkets, weighted by importance. Crime is not part of it. Higher is better.
Schools not included: Ofsted only inspects schools in England.
Down 22% in 5 years Recorded crimes in LL71, anti-social behaviour left out.
Crime severity: 0.6× the Isle of Anglesey average (0.5× the England and Wales average). 33 recorded crimes per 1,000 residents a year.
"Violence and sexual offences" is 81% of the harm here. It is a broad police category: most of these crimes are assaults without injury, harassment and threats, often indoors between people who know each other, and only a small part are sexual or serious violent offences. Police data does not say which, so each one is weighted at the England and Wales average for the category, which can overstate a quiet residential area.
Anti-social behaviour: 8.9 incidents per 1,000 residents a year, not scored. Not a crime, so it is not part of the Safety score.
Distances are straight-line, not walking routes. Scores use fixed distance bands, so they do not depend on other districts. Higher is better.
What it measures. Recorded crimes per 1,000 residents a year, with burglary and robbery counting more than shoplifting, ranked against every neighbourhood. 10 means among the safest tenth.
Data. Street-level crime from data.police.uk, September 2016 to August 2026.
Recorded crimes per 1,000 residents per year, most serious first, not counting anti-social behaviour.
| Type | Per 1,000 a year |
|---|---|
| Robbery | 0.1 |
| Burglary | 1.0 |
| Violence and sexual offences | 19.2 |
| Drugs | 0.6 |
| Possession of weapons | 0.3 |
| Other crime | 0.8 |
| Other theft | 2.8 |
| Theft from the person | 0.1 |
| Vehicle crime | 0.8 |
| Criminal damage and arson | 3.8 |
| Public order | 3.1 |
| Bicycle theft | 0.1 |
| Shoplifting | 0.1 |
Crime severity per resident (sentence-days of the crimes recorded each year). Hatched bars are years with fewer than twelve months of data for most residents.
Last 12 months: 6.6 against a 10-year average of 7.0, 6% lower.
Council: Isle of Anglesey