# LL51

Postcode district covering Bryncir, Garndolbenmaen and Golan, in Gwynedd.

LL51 is a postcode district covering Bryncir, Garndolbenmaen and Golan, in Gwynedd. Recorded crime 32.8 per 1,000 people. About 609 people.

Postcode district. Code LL51. In: [Postcodes](https://openindex.co.uk/postcode) › [LL](https://openindex.co.uk/postcode/ll)

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 LL51 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Population: 591** (2021). LL51 had 591 usual residents at the census (ONS Census 2021). 132nd least populated of 2,756. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/postcode/ll51#f-population
- **People in radon Affected Area squares: 100%** (2022). About 100% of people in LL51 live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022. https://openindex.co.uk/postcode/ll51#f-radon-affected-share
- **Gigabit broadband coverage: 25.1%** (January 2026). In LL51, 25.1% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026. https://openindex.co.uk/postcode/ll51#f-gigabit-coverage
- **Claimant rate: 1.6%** (August 2026). In LL51, 1.6% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026 (ONS via Nomis). UK 3.9%. Source: Claimant count (Nomis), August 2026. Published 15 September 2026. https://openindex.co.uk/postcode/ll51#f-claimant-rate

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas#place=LL51) (Worked out by Open Index · 2022): About 100% of people in LL51 live in a 1 km square that the radon atlas marks as a radon Affected Area.
- [Sales per year by postcode district](https://openindex.co.uk/map/house-sales-per-year#place=LL51) (Worked out by Open Index · 2025): 8 homes were sold in LL51 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime#place=LL51) (Police recorded crime and outcomes (data.police.uk) · August 2026): Police recorded 7 crimes and anti-social behaviour incidents in LL51 in August 2026.
- [Population by postcode district](https://openindex.co.uk/map/population#place=LL51) (Census 2021, England and Wales): LL51 had 591 usual residents at the census.

## How LL51 compares

Each postcode district against every other postcode district the measure covers.

| Measure | LL51 | Rank | Compared with |
| --- | --- | --- | --- |
| Population | 591 | 10th least populated | 66 postcode districts, LL · 2021 |
| People in radon Affected Area squares | 100% | joint most people in radon Affected Areas | 66 postcode districts, LL · 2022 |
| Gigabit broadband coverage | 25.1% | 10th lowest | 66 postcode districts, LL · Jan 2026 |
| Claimant rate | 1.6% | joint lowest | 52 postcode districts, LL · Aug 2026 |

## Is LL51 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in LL51 at a rate of 32.8 per 1,000 people.
That compares with 97.5 per 1,000 people across the LL postcode area.
In August 2026 alone, 7 cases of crime and anti-social behaviour were recorded in LL51.
In the 12 months to August 2026, the most common types were violence and sexual offences (8), other crime (5) and anti-social behaviour (4).
A year earlier, the recorded crime rate in LL51 was 47.6 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 LL51, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so LL51 has no single figure. Of its 1 neighbourhood with a rank:
- Decile 4: 1 neighbourhood

Source: Welsh Index of Multiple Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in Wales.

## Neighbourhoods in LL51

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Gwynedd 010A](https://openindex.co.uk/gwynedd/neighbourhood/w01000066) | 1,173 | 23.2 per 1,000 | 4 | 56.3% |

## Your MP

- [Dwyfor Meirionnydd](https://openindex.co.uk/constituency/dwyfor-meirionnydd): Liz Saville Roberts (Plaid Cymru), MP since July 2024.

As of 18 October 2026. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

## Postcode sectors in LL51

[LL51 9 (45 postcodes)](https://openindex.co.uk/postcode/ll51-9)

## Council

[Gwynedd](https://openindex.co.uk/gwynedd)

## Postcode districts next to LL51

[LL49](https://openindex.co.uk/postcode/ll49), [LL52](https://openindex.co.uk/postcode/ll52), [LL53](https://openindex.co.uk/postcode/ll53), [LL54](https://openindex.co.uk/postcode/ll54), [LL55](https://openindex.co.uk/postcode/ll55)

## More in the LL postcode area

[All LL postcode districts](https://openindex.co.uk/postcode/ll), [Every UK postcode area](https://openindex.co.uk/postcode)

## LL51 in brief

LL51 is a postcode district covering Bryncir, Garndolbenmaen and Golan, in Gwynedd.
About 609 people lived in LL51 in mid-2024 (worked out by Open Index from ONS small-area estimates); police recorded crimes and anti-social behaviour at a rate of 32.8 per 1,000 people in the 12 months to August 2026 (police.uk).
LL51 had 591 usual residents at the census.
About 100% of people in LL51 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In LL51, 25.1% of homes and businesses could get gigabit-capable broadband in January 2026.
In LL51, 1.6% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026.

## About

- Type: Postcode district
- Code: LL51
- Postcode area: [LL](https://openindex.co.uk/postcode/ll)
- Constituency: [Dwyfor Meirionnydd †](https://openindex.co.uk/constituency/dwyfor-meirionnydd)
- Council: [Gwynedd †](https://openindex.co.uk/gwynedd)
- Area: 54.91 km²
- People, mid-2024: 609*
- Neighbourhoods: 1
- Output areas: 2

* People: worked out by Open Index from neighbourhood estimates, shared out by where people lived at the census (by area in Northern Ireland). This area's edges do not follow neighbourhood edges, so the figure is close but not exact.
† Best fit: the constituency, council and nation this postcode district mostly lies in. Its edges do not follow theirs.

## Next door

[LL54](https://openindex.co.uk/postcode/ll54), [LL49](https://openindex.co.uk/postcode/ll49), [LL52](https://openindex.co.uk/postcode/ll52), [LL53](https://openindex.co.uk/postcode/ll53), [LL55](https://openindex.co.uk/postcode/ll55)

## Latest updates for LL51

- August 2026 house prices published: HM Land Registry and partners · Oct 2026.
- September 2026 rent published: ONS private rents · Oct 2026.
- Dental practices updated: NHS England · Oct 2026.
- Schools updated: Ofsted · Oct 2026.

The same figures as JSON: https://openindex.co.uk/v1/places/LL51

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/ll51, or to one figure with its anchor, https://openindex.co.uk/postcode/ll51#f-population.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.10. The HTML page: https://openindex.co.uk/postcode/ll51