What area is the SA18 postcode in?

SA18 is a postcode district in Swansea, Swansea, Wales. It is part of the SA postcode area.

How many addresses are in the SA18 postcode?

The SA18 postcode district covers Swansea in Swansea. The exact address count can be retrieved via the APITier Postcode Lookup API.

How do I look up addresses in SA18 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 SA18. The response returns all PAF addresses as structured JSON including building name, number, street, town, county, and geocoordinates.

Royal Mail PAF · Wales

SA18 Postcode — Swansea

SA18 is a postcode district in Swansea, Swansea, Wales. Use the lookup below to explore addresses within this postcode district.

SA18

Postcode District

SA — Swansea

Area

Wales

Region

Royal Mail PAF

Data Source

Postcode Lookup — SA18 DistrictSample

{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "SA18 1AA",
    "quality": 1,
    "eastings": 264872,
    "northings": 242152,
    "country": "Wales",
    "nhs_ha": "Wales",
    "longitude": -3.9304,
    "latitude": 51.632,
    "european_electoral_region": "Wales",
    "primary_care_trust": "Swansea",
    "region": "Wales",
    "lsoa": "Swansea 001A",
    "msoa": "Swansea 001",
    "incode": "1AA",
    "outcode": "SA18",
    "parliamentary_constituency": "Swansea",
    "admin_district": "Swansea",
    "parish": "Swansea, unparished area",
    "admin_county": null,
    "admin_ward": "Swansea Central",
    "ced": null,
    "ccg": "NHS Wales",
    "nuts": "Swansea",
    "codes": {
      "admin_district": "E07000000",
      "admin_county": "E99999999",
      "admin_ward": "E05000000",
      "parish": "E43000000",
      "parliamentary_constituency": "E14000000",
      "ccg": "E38000000",
      "lsoa": "E01000000",
      "msoa": "E02000000"
    }
  }
}

About the SA18 Postcode District

The SA18 postcode district is part of the Swansea (SA) postcode area, covering Swansea and surrounding areas in Wales, Wales.

Postcodes in the SA18 district follow the format SA18 nXX where n is a digit and XX are letters. Each inward code identifies a specific delivery walk within the district.

The wider Swansea postcode area (SA) also covers: Neath, Port Talbot, Llanelli, Ammanford, Haverfordwest.

Frequently Asked Questions

What area does the SA18 postcode cover?

The SA18 postcode district covers Swansea in Swansea, Wales. It is one of 51 districts in the SA postcode area.

How do I look up all addresses in the SA18 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 SA18. The API returns all Royal Mail PAF addresses as structured JSON.

Is SA18 a valid UK postcode district?

Yes. SA18 is a Royal Mail postcode district in Swansea, Wales. Full UK postcodes in this district follow the format SA18 followed by a digit and two letters (e.g. SA18 1AA).

SA18 Postcode — Swansea

About the SA18 Postcode District

Frequently Asked Questions

Other Swansea Postcode Districts