LL57
Postcode districtPostcode district covering Bangor and Bethesda, in Gwynedd.
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 LL57 postcode. How census figures are added up
Radon Affected Area by postcode district
Worked out by Open Index · 2022
About 87% of people in LL57 live in a 1 km square that the radon atlas marks as a radon Affected Area.
How LL57 compares
Each dot is a postcode district. The black line marks the middle one.
Is LL57 safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in LL57 at a rate of 124.3 per 1,000 people.
That compares with 97.5 per 1,000 people across the LL postcode area.
In August 2026 alone, 415 cases of crime and anti-social behaviour were recorded in LL57.
In the 12 months to August 2026, the most common types were violence and sexual offences (1,243), anti-social behaviour (693) and other crime (603).
A year earlier, the recorded crime rate in LL57 was 110.3 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 LL57, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so LL57 has no single figure. Of its 16 neighbourhoods with a rank:
- Decile 1 (Wales’s most deprived 10%): 2 neighbourhoods
- Decile 3: 1 neighbourhood
- Decile 4: 2 neighbourhoods
- Decile 5: 3 neighbourhoods
- Decile 6: 3 neighbourhoods
- Decile 7: 1 neighbourhood
- Decile 8: 2 neighbourhoods
- Decile 9: 1 neighbourhood
- Decile 10 (Wales’s least deprived 10%): 1 neighbourhood
Welsh Index of Multiple Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in Wales.
Neighbourhoods in LL57
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| Gwynedd 001A | 1,988 | 418.1 per 1,000 | 5 | 62.3% |
| Gwynedd 001B | 1,295 | 100.1 per 1,000 | 8 | 71.6% |
| Gwynedd 001C | 1,178 | 217.9 per 1,000 | 4 | 81.4% |
| Gwynedd 001D | 1,106 | 140.1 per 1,000 | 1 | 64.9% |
| Gwynedd 001E | 3,048 | 68.8 per 1,000 | 9 | 86.8% |
| Gwynedd 002A | 2,002 | 191.3 per 1,000 | 6 | 96.9% |
| Gwynedd 002B | 1,675 | 103.4 per 1,000 | 8 | 97.4% |
| Gwynedd 002C | 1,406 | 82.2 per 1,000 | 3 | 96.6% |
| Gwynedd 002D | 1,363 | 115.8 per 1,000 | 1 | 90.6% |
| Gwynedd 002E | 1,933 | 106.3 per 1,000 | 10 | 72.5% |
| Gwynedd 003A | 1,438 | 77.0 per 1,000 | 6 | 59.5% |
| Gwynedd 003B | 2,240 | 49.1 per 1,000 | 6 | 49.6% |
| Gwynedd 003C | 1,267 | 79.2 per 1,000 | 5 | 53.4% |
| Gwynedd 003D | 1,142 | 118.9 per 1,000 | 4 | 78.2% |
| Gwynedd 003E | 2,122 | 59.9 per 1,000 | 7 | 66.9% |
| Gwynedd 005D | 1,168 | 57.2 per 1,000 | 5 | 75.6% |
MPs for LL57
- Claire HughesLabourMP for Bangor Aberconwy97% of LL57’s postcodes
- Liz Saville RobertsPlaid CymruMP for Dwyfor Meirionnydd2.8% of LL57’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 LL573
Postcode sectors in LL575
Council1
Towns in LL571
Postcode districts next to LL575
Nearest rail stations1
More in the LL postcode area2
LL57 in brief
LL57 is a postcode district covering Bangor and Bethesda, in Gwynedd.
About 28,750 people lived in LL57 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £179,000 in 2025 across 260 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 124.3 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in LL57 was £179,000 in 2025.
LL57 had 26,929 usual residents at the census.
About 87% of people in LL57 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In LL57, 74.6% of homes and businesses could get gigabit-capable broadband in January 2026.