LL66 postcode district: Isle of Anglesey

LL66 is a postcode district in Wales, with 22 postcodes in use in 2 sectors. Its council is Isle of Anglesey.

Postcodes in use
22
Sectors
2
Council
Isle of Anglesey
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 LL66, and which are new since 2020

Map of every postcode in LL66, by new since 2020 Of the 22 postcodes in LL66 that ONS places, 22 were in use before 2020. Places named: Twrcelyn, Talybolion. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. LL66 0AA: before 2020LL66 0AB: before 2020LL66 0AD: before 2020LL66 0AE: before 2020LL66 0AN: before 2020LL66 0AP: before 2020LL66 0AR: before 2020LL66 0AS: before 2020LL66 0AT: before 2020LL66 0AU: before 2020LL66 0AW: before 2020LL66 0AX: before 2020LL66 0AY: before 2020LL66 0BE: before 2020LL66 0BG: before 2020LL66 0BH: before 2020LL66 0BL: before 2020LL66 0BN: before 2020LL66 0BP: before 2020LL66 0BW: before 2020LL66 9AA: before 2020LL66 9AB: before 2020 TwrcelynTalybolion Map of every postcode in LL66, by new since 2020 Of the 22 postcodes in LL66 that ONS places, 22 were in use before 2020. Places named: Twrcelyn, Talybolion. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. TwrcelynTalybolion
  • New since 2020: 0
  • In use before 2020: 22

Of the 22 postcodes in LL66 that ONS places, 22 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. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 53.3798, longitude -4.4083. 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 LL66?

Ofcom reports on 22 of the 22 postcodes in LL66. At 11 of them every home and business can get gigabit broadband, and at 5 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit11 of 22
Postcodes where every home can get superfast11 of 22
Postcodes where some cannot get decent broadband5 of 22

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 LL66?

HM Land Registry records no standard sales of homes in LL66 in the 12 months to August 2026.

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 LL66

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

LL66 020 postcodesLL66 92 postcodes
UK postcode format explained

Places in LL66

We list no town or village for LL66. 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 LL66 postcode is here, under its sector above.

Who covers LL66

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

  • Ynys Môn22

Police force areas

  • North Wales22

Next to LL66

LL65 postcode district LL67 postcode district All LL districts

"Next to" is by number: the districts before and after LL66 in the LL area.

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