LL55 9 postcode sector in the LL55 district

LL55 9 is a sector of the LL55 district: every postcode that starts LL55 9. It has 8 postcodes in use, 8 of them large-user postcodes. A large-user postcode is one Royal Mail gives to a single address that gets a lot of mail.

Not sure what a sector is? UK postcode format explained.

Every postcode in the LL55 9 sector, by gigabit broadband

Map of every postcode in the LL55 9 sector, by gigabit broadband Of the 8 postcodes in the LL55 9 sector that ONS places, 1 can all get it and 7 have no Ofcom figure. Places named: Caernarfon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A4086A4871 LL55 9AQ: no Ofcom figureLL55 9ZZ: no Ofcom figureLL55 9ZX: gigabit for all Caernarfon Map of every postcode in the LL55 9 sector, by gigabit broadband Of the 8 postcodes in the LL55 9 sector that ONS places, 1 can all get it and 7 have no Ofcom figure. Places named: Caernarfon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A487A4086 Caernarfon
  • No home or business can get gigabit: 0
  • Some can get gigabit: 0
  • Every home and business can get gigabit: 1
  • Ofcom gives no figure: 7

Of the 8 postcodes in the LL55 9 sector that ONS places, 1 can all get it and 7 have no Ofcom figure.

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. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; gigabit: Ofcom, Connected Nations, Spring 2026; 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

Postcodes in LL55 9

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

LL55 9AQLL55 9BHLL55 9BXLL55 9DALL55 9DDLL55 9DELL55 9ZXLL55 9ZZ

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

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