What area is the LL21 postcode in?

LL21 is a postcode district in Llandudno, Llandudno, Wales. It is part of the LL postcode area.

How many addresses are in the LL21 postcode?

The LL21 postcode district covers Llandudno in Llandudno. The exact address count can be retrieved via the APITier Postcode Lookup API.

How do I look up addresses in LL21 programmatically?

Use the APITier Postcode Lookup API: GET https://postcode.apitier.com/v1/postcodes/{postcode}?x-api-key=YOUR_KEY — where the postcode begins with LL21. The response returns all PAF addresses as structured JSON including building name, number, street, town, county, and geocoordinates.

Royal Mail PAF · Wales

LL21 Postcode — Llandudno

LL21 is a postcode district in Llandudno, Llandudno, Wales. Use the lookup below to explore addresses within this postcode district.

LL21

Postcode District

LL — Llandudno

Area

Wales

Region

Royal Mail PAF

Data Source

Postcode Lookup — LL21 DistrictSample

{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "LL21 1AA",
    "quality": 1,
    "eastings": 270136,
    "northings": 429786,
    "country": "Wales",
    "nhs_ha": "Wales",
    "longitude": -3.8552,
    "latitude": 53.3224,
    "european_electoral_region": "Wales",
    "primary_care_trust": "Llandudno",
    "region": "Wales",
    "lsoa": "Llandudno 001A",
    "msoa": "Llandudno 001",
    "incode": "1AA",
    "outcode": "LL21",
    "parliamentary_constituency": "Llandudno",
    "admin_district": "Llandudno",
    "parish": "Llandudno, unparished area",
    "admin_county": null,
    "admin_ward": "Llandudno Central",
    "ced": null,
    "ccg": "NHS Wales",
    "nuts": "Llandudno",
    "codes": {
      "admin_district": "E07000000",
      "admin_county": "E99999999",
      "admin_ward": "E05000000",
      "parish": "E43000000",
      "parliamentary_constituency": "E14000000",
      "ccg": "E38000000",
      "lsoa": "E01000000",
      "msoa": "E02000000"
    }
  }
}

About the LL21 Postcode District

The LL21 postcode district is part of the Llandudno (LL) postcode area, covering Llandudno and surrounding areas in Wales, Wales.

Postcodes in the LL21 district follow the format LL21 nXX where n is a digit and XX are letters. Each inward code identifies a specific delivery walk within the district.

The wider Llandudno postcode area (LL) also covers: Colwyn Bay, Rhyl, Prestatyn, Holyhead, Bangor.

Frequently Asked Questions

What area does the LL21 postcode cover?

The LL21 postcode district covers Llandudno in Llandudno, Wales. It is one of 66 districts in the LL postcode area.

How do I look up all addresses in the LL21 postcode?

Use the live lookup widget above or call the APITier Postcode Lookup API: GET https://postcode.apitier.com/v1/postcodes/{full postcode}?x-api-key=YOUR_KEY. Replace {full postcode} with any complete postcode beginning LL21. The API returns all Royal Mail PAF addresses as structured JSON.

Is LL21 a valid UK postcode district?

Yes. LL21 is a Royal Mail postcode district in Llandudno, Wales. Full UK postcodes in this district follow the format LL21 followed by a digit and two letters (e.g. LL21 1AA).

LL21 Postcode — Llandudno

About the LL21 Postcode District

Frequently Asked Questions

Other Llandudno Postcode Districts