LL57 postcode district

Postcodes and sectors

907 of the district's 1,185 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 53.20677, -4.11209, which locates the district, not a building.

Companies registered in LL57

Companies House lists 1,377 companies with a registered office in LL57; 254 of them at addresses 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 LL57

• Gwynedd
• Wales
• Bangor
• Bethesda
• Tregarth
• Rachub
• Rhiwlas
• Llandygai
• Tal-y-bont
• Mynydd Llandegai
• Pentir
• Sling
• Glasinfryn
• Coed-y-parc
• Llanllechid
• Caerhun
• Felin-hên
• Waen-pentir
• Braich-talog
• Capel-y-graig
• Cil-geraint
• Bryn Eglwys
• Minffordd
• Bron Ogwen

Roads filed under LL57

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
• Abercaseg
• Abercaseg Road
• Adwy'r Nant
• Ainon Close
• Ainon Road
• Albert Street
• All Bryn Eglwys
• Allt Dewi
• Allt Glanrafon
• Allt Pen y Bryn
• Allt y Garth
• Alotan Crescent
• Ambrose Street
• Ar Afon
• Ashley Road
• Awelfryn
• Back Regent Street
• Bakehouse Street
• Bangor Road
• Beach Road
• Belmont Avenue
• Belmont Drive
• Belmont Road
• Belmont Street
• Bishop's Walk
• Bishops Mill Road
• Blaen-y-Wawr
• Braichmelyn
• Breeze Hill
• Brick Street
• Britannia Square
• Britannia Stryd
• Bro Derfel
• Bro Emrys
• Bro Infryn
• Bron-y-De
• Bron Arfon
• Bron Bethel
• Bron Gwynedd
• Bron y Waun
• Bro Ogwen
• Bro Rhiwen
• Bro Salem
• Bro Seiri
• Bro Syr Ifor
• Bryn-Llwyd
• Bryn-Teg
• Bryn Adda
• Bryn Berllan
• Bryn Caseg
• Bryn Coed
• Bryn Eithinog
• Bryn Heulog Terrace
• Bryn Ogwen
• Bryn Pistyll
• Brynteg Place
• Brynteg Street
• Bryntirion
• Bryn y Goelcerth

Check an address in LL57

Check an address in LL57

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=LL57" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about LL57

What does an LL57 postcode tell you?

That the address lies in the LL57 district of the LL (Llandudno) postcode area, and the place OS Open Names most often lists first for its postcodes is Bangor. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 907 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 LL57

• LL594.6 km
• LL566.7 km
• LL588.4 km
• LL3310.1 km
• LL5510.1 km
• LL6110.1 km
• LL6010.9 km
• LL7511.2 km
• LL7613.4 km
• LL7714.6 km
• LL7414.7 km
• LL3415.0 km
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• How a British address is written
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distance between the districts' centroids