# LL39

Postcode district covering Arthog, in Gwynedd.

LL39 is a postcode district covering Arthog, in Gwynedd. About 297 people.

Postcode district. Code LL39. 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 LL39 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Population: 296** (2021). LL39 had 296 usual residents at the census (ONS Census 2021). 58th 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/ll39#f-population
- **People in radon Affected Area squares: 100%** (2022). About 100% of people in LL39 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/ll39#f-radon-affected-share
- **Gigabit broadband coverage: 94.5%** (January 2026). In LL39, 94.5% 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/ll39#f-gigabit-coverage
- **Aged 15 to 64: 57.2%** (2021). 57.2% of residents in LL39 were aged 15 to 64 at the census (ONS Census 2021). Joint 390th lowest 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/ll39#f-age-15-to-64

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=LL39) (Worked out by Open Index · 2022): About 100% of people in LL39 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=LL39) (Worked out by Open Index · 2025): 4 homes were sold in LL39 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=LL39) (Police recorded crime and outcomes (data.police.uk) · August 2026): Police recorded 2 crimes and anti-social behaviour incidents in LL39 in August 2026.
- [Population by postcode district](https://openindex.co.uk/map/population?place=LL39) (Census 2021, England and Wales): LL39 had 296 usual residents at the census.

## How LL39 compares

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

| Measure | LL39 | Rank | Compared with |
| --- | --- | --- | --- |
| Population | 296 | 2nd 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 | 94.5% | 10th highest | 66 postcode districts, LL · Jan 2026 |
| Aged 15 to 64 | 57.2% | 30th lowest | 66 postcode districts, LL · 2021 |

## What is the population of LL39?

LL39 had 296 usual residents at the census.
LL39 is the 58th least populated of 2,756 in the UK.

## 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 LL39

[LL39 1 (19 postcodes)](https://openindex.co.uk/postcode/ll39-1)

## Council

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

## Postcode districts next to LL39

[LL36](https://openindex.co.uk/postcode/ll36), [LL37](https://openindex.co.uk/postcode/ll37), [LL38](https://openindex.co.uk/postcode/ll38), [LL40](https://openindex.co.uk/postcode/ll40)

## Nearest rail stations

[Morfa Mawddach (4.7 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-4.0322,52.7071)

## 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)

## LL39 in brief

LL39 is a postcode district covering Arthog, in Gwynedd.
About 297 people lived in LL39 in mid-2024 (worked out by Open Index from ONS small-area estimates).
LL39 had 296 usual residents at the census.
About 100% of people in LL39 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In LL39, 94.5% of homes and businesses could get gigabit-capable broadband in January 2026.
57.2% of residents in LL39 were aged 15 to 64 at the census.

## About

- Type: Postcode district
- Code: LL39
- 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: 34.85 km²
- People, mid-2024: 297*
- Output areas: 1

* 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

[LL36](https://openindex.co.uk/postcode/ll36), [LL40](https://openindex.co.uk/postcode/ll40), [LL38](https://openindex.co.uk/postcode/ll38), [LL37](https://openindex.co.uk/postcode/ll37)

## Latest updates for LL39

- 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/LL39

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/ll39, or to one figure with its anchor, https://openindex.co.uk/postcode/ll39#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 2026.10.9. The HTML page: https://openindex.co.uk/postcode/ll39