LL20
Postcode districtPostcode district covering Llangollen and Glyn Ceiriog, in Denbighshire and Wrexham.
Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an LL20 postcode. How census figures are added up
Radon Affected Area by postcode district
Worked out by Open Index · 2022
About 100% of people in LL20 live in a 1 km square that the radon atlas marks as a radon Affected Area.
How LL20 compares
Each dot is a postcode district. The black line marks the middle one.
Is LL20 safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in LL20 at a rate of 73.6 per 1,000 people.
That compares with 97.5 per 1,000 people across the LL postcode area.
In August 2026 alone, 56 cases of crime and anti-social behaviour were recorded in LL20.
In the 12 months to August 2026, the most common types were violence and sexual offences (225), anti-social behaviour (145) and other crime (79).
A year earlier, the recorded crime rate in LL20 was 82.2 per 1,000 people.
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.
Deprivation in LL20, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so LL20 has no single figure. Of its 5 neighbourhoods with a rank:
- Decile 5: 2 neighbourhoods
- Decile 6: 1 neighbourhood
- Decile 8: 2 neighbourhoods
Welsh Index of Multiple Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in Wales.
Neighbourhoods in LL20
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| Denbighshire 016C | 1,283 | 141.1 per 1,000 | 5 | 40.0% |
| Denbighshire 016D | 1,411 | 98.0 per 1,000 | 6 | 4.1% |
| Denbighshire 016E | 1,332 | 62.5 per 1,000 | 8 | 33.5% |
| Wrexham 017D | 1,995 | 41.9 per 1,000 | 8 | 76.7% |
| Wrexham 019F | 2,064 | 46.5 per 1,000 | 5 | 85.9% |
MPs for LL20
- Becky GittinsLabourMP for Clwyd East71% of LL20’s postcodes
- Steve WitherdenLabourMP for Montgomeryshire and Glyndŵr29% of LL20’s postcodes
As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.
Middle areas in LL201
Postcode sectors in LL203
Councils LL20 covers2
Postcode districts next to LL204
More in the LL postcode area2
LL20 in brief
LL20 is a postcode district covering Llangollen and Glyn Ceiriog, in Denbighshire and Wrexham.
About 7,973 people lived in LL20 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £239,000 in 2025 across 115 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 73.6 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in LL20 was £239,000 in 2025.
LL20 had 7,786 usual residents at the census.
About 100% of people in LL20 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In LL20, 52.3% of homes and businesses could get gigabit-capable broadband in January 2026.