LL20 postcode district

Postcodes and sectors

384 of the district's 479 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there. The live postcodes centre on 52.95894, -3.16075, which locates the district, not a building.

Companies registered in LL20

Companies House lists 376 companies with a registered office in LL20; none of them at an address shared by 25 or more companies (1 October 2026 snapshot). 25 is the count at which the address lookup reports a company cluster.

Places OS Open Names lists for LL20

• Wales
• Sir Ddinbych
• Denbighshire
• Wrecsam
• Wrexham
• Llangollen
• Glyn Ceiriog
• Froncysyllte
• Trevor
• Garth
• Pontfadog
• Llwynmawr
• Garth Trevor
• Pandy
• Llanarmon Dyffryn Ceiriog
• Berwyn
• Tregeiriog
• Llidiart Annie
• Pentre-dwfr
• Rhewl
• Llandynan
• Geufron
• Pentrefelin
• Trevor Uchaf

Roads filed under LL20

Named roads first, then numbered ones. A road is filed under one district even where it runs through several, so a street missing here may be listed under a neighbouring district — which is why the address lookup never calls a British street absent. Great Britain has no open register of buildings, so a listed road never means a building on it exists.

• Abbey Road
• Aber-Adda
• Afon Glas
• Allt y Badi
• Allt y Bont
• Allt y Gwernant
• Allt y Tŵr
• Alma Road
• Arosfa Crescent
• Bache Mill Road
• Berwynfa
• Berwyn Road
• Berwyn Street
• Birch Hill
• Bishop's Walk
• Blackwood Road
• Bont Hill
• Bridge Street
• Bro-Ddewi
• Bron y Gamlas
• Brook Street
• Bryn Hyfryd
• Butlers Hill
• Bwlch Oernant
• Cae'r Ysgol
• Cae Bryn
• Cae Hafod
• Cae Plas Teg
• Camo'r Afon
• Ceiriog Terrace Road
• Chapel Street
• Charles Avenue
• Church Street
• Cilmedw Way
• Clos Tir Griffin
• Coed Afon
• Cross Lane
• Cwmalis Road
• Cysgod y Berwyn
• Cysgod y Dderwen
• Dee Lane
• Dinas Drive
• Dinbren Road
• East Street
• Erw-Wladys
• Ffordd Llangollen
• Ffordd Maes Mawr
• Ffordd Newydd
• Ffordd Pen-y-Gaer
• Ffordd Plas Trefor
• Ffordd Tyn y Cestyll
• Ffordd y Chwarel
• Ffordd y Garth
• Ffordd yr Abaty
• Fron Bache
• Fron Castell
• Garth Road
• Gate Road
• George Avenue
• George Street

Check an address in LL20

Check an address in LL20

The same road list through the API, from the outward code alone:

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=LL20" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about LL20

What does an LL20 postcode tell you?

That the address lies in the LL20 district of the LL (Llandudno) postcode area, and the place OS Open Names most often lists first for its postcodes is Llangollen. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 384 live postcodes.

Where the counts come from

• ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
• os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.
• uk-companies-house · version 2026-10-01 · Companies House free company data product, Open Government Licence v3.0

What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.

Data synced on 2026-11-01: the newest version among the datasets listed above.

Districts nearest LL20

• LL148.1 km
• SY1113.2 km
• SY1013.5 km
• LL1114.3 km
• LL1315.9 km
• LL2117.1 km
• LL1218.4 km
• SY1218.9 km
• LL1519.1 km
• SY2222.6 km
• CH723.6 km
• CH427.0 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids