LL37 postcode district: Gwynedd

LL37 is a postcode district in Wales, with 40 postcodes in use in 1 sector. Its council is Gwynedd.

Postcodes in use
40
Sectors
1
Council
Gwynedd
Places
None listed

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in LL37, and which are new since 2020

Map of every postcode in LL37, by new since 2020 Of the 40 postcodes in LL37 that ONS places, 40 were in use before 2020. Places named: Arthog a Llangelynnin. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A493 LL37 2JA: before 2020LL37 2JB: before 2020LL37 2JD: before 2020LL37 2JE: before 2020LL37 2JF: before 2020LL37 2JG: before 2020LL37 2JH: before 2020LL37 2JJ: before 2020LL37 2JL: before 2020LL37 2JP: before 2020LL37 2JQ: before 2020LL37 2JR: before 2020LL37 2JS: before 2020LL37 2JT: before 2020LL37 2JU: before 2020LL37 2JX: before 2020LL37 2JY: before 2020LL37 2JZ: before 2020LL37 2LA: before 2020LL37 2QA: before 2020LL37 2QB: before 2020LL37 2QD: before 2020LL37 2QE: before 2020LL37 2QF: before 2020LL37 2QH: before 2020LL37 2QJ: before 2020LL37 2QL: before 2020LL37 2QN: before 2020LL37 2QP: before 2020LL37 2QQ: before 2020LL37 2QR: before 2020LL37 2QS: before 2020LL37 2QW: before 2020LL37 2UJ: before 2020LL37 2UX: before 2020LL37 2UZ: before 2020LL37 2YJ: before 2020LL37 2YQ: before 2020LL37 2YX: before 2020 Arthog a Llangelynnin Map of every postcode in LL37, by new since 2020 Of the 40 postcodes in LL37 that ONS places, 40 were in use before 2020. Places named: Arthog a Llangelynnin. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Arthog a Llangelynnin
  • New since 2020: 0
  • In use before 2020: 40

Of the 40 postcodes in LL37 that ONS places, 40 were in use before 2020.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. New since 2020 means it came into use in January 2020 or later. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 52.6658, longitude -4.0839. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; when each came into use: the same directory; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

What broadband can you get in LL37?

Ofcom reports on 40 of the 40 postcodes in LL37. At 36 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit36 of 40
Postcodes where every home can get superfast40 of 40

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

What do homes sell for in LL37?

Homes in LL37 sold for a typical £326,550 in the 12 months to August 2026, across 6 sales, up 94.4% on the 12 months before, HM Land Registry's figures show.

£326,550 typical price, the 12 months to August 2026
£168,000 12 months to August 2025
▲ up 94.4% on the 12 months before
  • Detached 4 sales, too few to price
  • Semi-detached 1 sale, too few to price
  • Terraced 1 sale, too few to price

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Postcodes in LL37

Pick a sector, then a postcode. A sector is the district plus the next digit.

LL37 240 postcodes
UK postcode format explained

Places in LL37

We list no town or village for LL37. A place gets a page here only when enough postcodes are in one: a town or village here is a built-up area named by the Office for National Statistics in England and Wales, or a census locality named by National Records of Scotland. Every LL37 postcode is here, under its sector above.

Who covers LL37

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Dwyfor Meirionnydd40

Police force areas

  • North Wales40

Next to LL37

LL36 postcode district LL38 postcode district All LL districts

"Next to" is by number: the districts before and after LL37 in the LL area.

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