LL51 postcode district: Gwynedd

LL51 is a postcode district in Wales, with 45 postcodes in use in 1 sector. Its council is Gwynedd.

Postcodes in use
45
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 LL51, and which are new since 2020

Map of every postcode in LL51, by new since 2020 Of the 45 postcodes in LL51 that ONS places, 1 are new since 2020 and 44 were in use before 2020. Places named: Dolbenmaen, Clynnog. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A487 LL51 9AJ: before 2020LL51 9AQ: before 2020LL51 9AX: before 2020LL51 9AZ: before 2020LL51 9BQ: before 2020LL51 9DJ: before 2020LL51 9DQ: before 2020LL51 9DX: before 2020LL51 9DZ: before 2020LL51 9EJ: before 2020LL51 9EQ: before 2020LL51 9EX: before 2020LL51 9EZ: before 2020LL51 9HX: before 2020LL51 9HZ: before 2020LL51 9LJ: before 2020LL51 9LQ: before 2020LL51 9LX: before 2020LL51 9LZ: before 2020LL51 9NJ: before 2020LL51 9NQ: before 2020LL51 9PJ: before 2020LL51 9PQ: before 2020LL51 9RJ: before 2020LL51 9RQ: before 2020LL51 9RZ: before 2020LL51 9SZ: before 2020LL51 9TJ: before 2020LL51 9TQ: before 2020LL51 9TX: before 2020LL51 9TZ: before 2020LL51 9UJ: before 2020LL51 9UQ: before 2020LL51 9UX: before 2020LL51 9YT: before 2020LL51 9YU: before 2020LL51 9YY: before 2020LL51 9AB: new since 2020 DolbenmaenClynnog Map of every postcode in LL51, by new since 2020 Of the 45 postcodes in LL51 that ONS places, 1 are new since 2020 and 44 were in use before 2020. Places named: Dolbenmaen, Clynnog. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. DolbenmaenClynnog
  • New since 2020: 1
  • In use before 2020: 44

Of the 45 postcodes in LL51 that ONS places, 1 are new since 2020 and 44 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 52.9740, longitude -4.2390. 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

The newest postcode

LL51 9ABApril 2023

What broadband can you get in LL51?

Ofcom reports on 45 of the 45 postcodes in LL51. At 7 of them every home and business can get gigabit broadband, and at 7 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit7 of 45
Postcodes where every home can get superfast22 of 45
Postcodes where some cannot get decent broadband7 of 45

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 LL51?

HM Land Registry records 4 sales of homes in LL51 in the 12 months to August 2026: too few to give a typical price.

  • Detached 1 sale, too few to price
  • Semi-detached 1 sale, too few to price
  • Terraced 2 sales, 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 LL51

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

LL51 945 postcodes
UK postcode format explained

Places in LL51

We list no town or village for LL51. 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 LL51 postcode is here, under its sector above.

Who covers LL51

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 Meirionnydd45

Police force areas

  • North Wales45

Next to LL51

LL49 postcode district LL52 postcode district All LL districts

"Next to" is by number: the districts before and after LL51 in the LL area.

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