What area is the CF40 postcode in?

CF40 is a postcode district in Cardiff, Cardiff, Wales. It is part of the CF postcode area.

How many addresses are in the CF40 postcode?

The CF40 postcode district covers Cardiff in Cardiff. The exact address count can be retrieved via the APITier Postcode Lookup API.

How do I look up addresses in CF40 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 CF40. The response returns all PAF addresses as structured JSON including building name, number, street, town, county, and geocoordinates.

Royal Mail PAF · Wales

CF40 Postcode — Cardiff

CF40 is a postcode district in Cardiff, Cardiff, Wales. Use the lookup below to explore addresses within this postcode district.

CF40

Postcode District

CF — Cardiff

Area

Wales

Region

Royal Mail PAF

Data Source

Postcode Lookup — CF40 DistrictSample

{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "CF40 1AA",
    "quality": 1,
    "eastings": 319122,
    "northings": 224037,
    "country": "Wales",
    "nhs_ha": "Wales",
    "longitude": -3.1554,
    "latitude": 51.4688,
    "european_electoral_region": "Wales",
    "primary_care_trust": "Cardiff",
    "region": "Wales",
    "lsoa": "Cardiff 001A",
    "msoa": "Cardiff 001",
    "incode": "1AA",
    "outcode": "CF40",
    "parliamentary_constituency": "Cardiff",
    "admin_district": "Cardiff",
    "parish": "Cardiff, unparished area",
    "admin_county": null,
    "admin_ward": "Cardiff Central",
    "ced": null,
    "ccg": "NHS Wales",
    "nuts": "Cardiff",
    "codes": {
      "admin_district": "E07000000",
      "admin_county": "E99999999",
      "admin_ward": "E05000000",
      "parish": "E43000000",
      "parliamentary_constituency": "E14000000",
      "ccg": "E38000000",
      "lsoa": "E01000000",
      "msoa": "E02000000"
    }
  }
}

About the CF40 Postcode District

The CF40 postcode district is part of the Cardiff (CF) postcode area, covering Cardiff and surrounding areas in Wales, Wales.

Postcodes in the CF40 district follow the format CF40 nXX where n is a digit and XX are letters. Each inward code identifies a specific delivery walk within the district.

The wider Cardiff postcode area (CF) also covers: Barry, Penarth, Pontypridd, Caerphilly, Bridgend.

Frequently Asked Questions

What area does the CF40 postcode cover?

The CF40 postcode district covers Cardiff in Cardiff, Wales. It is one of 33 districts in the CF postcode area.

How do I look up all addresses in the CF40 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 CF40. The API returns all Royal Mail PAF addresses as structured JSON.

Is CF40 a valid UK postcode district?

Yes. CF40 is a Royal Mail postcode district in Cardiff, Wales. Full UK postcodes in this district follow the format CF40 followed by a digit and two letters (e.g. CF40 1AA).

CF40 Postcode — Cardiff

About the CF40 Postcode District

Frequently Asked Questions

Other Cardiff Postcode Districts