Tref Cybi
Tref Cybi is one of 14 wards in Isle of Anglesey, home to 4,360 people in 2,023 households (Census 2021). Homes sold for a median of £130,000 over the past two years, 42% below the Isle of Anglesey median. On average 13% of the land within 500 metres of a home postcode is green space — 44% below the Isle of Anglesey average.
People and homes.
4,360 residents in 2,023 households, next to the Isle of Anglesey average.
Source: Census 2021, Office for National Statistics
Prices.
Quarterly median of standard sales in Tref Cybi and Isle of Anglesey.
Source: HM Land Registry Price Paid Data, sales to 28 Aug 2026
Safety.
Police recorded 826 crimes and incidents in Tref Cybi in the 12 months to Aug 2026: 189 per 1,000 residents, against 74 across Isle of Anglesey.
Police.uk records crimes by approximate location, not by where victims or offenders live. Busy streets, shops, stations and nightlife record more. Figures are counts, not a measure of personal risk. Rates per resident are higher wherever many people visit but few live, such as city centres.
Source: data.police.uk street-level crime, North Wales Police (Open Government Licence v3.0)
Food hygiene.
Food businesses in Tref Cybi with a published hygiene rating.
Council food safety officers rate businesses from 0 (urgent improvement necessary) to 5 (very good) for hygiene, the state of the premises and how food safety is managed. A rating reflects the standards found on the day of inspection, not the quality of the food.
Source: Food Standards Agency, food hygiene rating data as of 26 October 2026 (Open Government Licence)