What area is the SA4 postcode in?

SA4 is a postcode district in Swansea, Swansea, Wales. It is part of the SA postcode area.

How many addresses are in the SA4 postcode?

The SA4 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 SA4 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 SA4. The response returns all PAF addresses as structured JSON including building name, number, street, town, county, and geocoordinates.

Royal Mail PAF · Wales

SA4 Postcode — Swansea

SA4 is a postcode district in Swansea, Swansea, Wales. Use the lookup below to explore addresses within this postcode district.

SA4

Postcode District

SA — Swansea

Area

Wales

Region

Royal Mail PAF

Data Source

Postcode Lookup — SA4 DistrictSample

{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "SA4 1AA",
    "quality": 1,
    "eastings": 259622,
    "northings": 245216,
    "country": "Wales",
    "nhs_ha": "Wales",
    "longitude": -4.0054,
    "latitude": 51.6596,
    "european_electoral_region": "Wales",
    "primary_care_trust": "Swansea",
    "region": "Wales",
    "lsoa": "Swansea 001A",
    "msoa": "Swansea 001",
    "incode": "1AA",
    "outcode": "SA4",
    "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 SA4 Postcode District

The SA4 postcode district is part of the Swansea (SA) postcode area, covering Swansea and surrounding areas in Wales, Wales.

Postcodes in the SA4 district follow the format SA4 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 SA4 postcode cover?

The SA4 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 SA4 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 SA4. The API returns all Royal Mail PAF addresses as structured JSON.

Is SA4 a valid UK postcode district?

Yes. SA4 is a Royal Mail postcode district in Swansea, Wales. Full UK postcodes in this district follow the format SA4 followed by a digit and two letters (e.g. SA4 1AA).

SA4 Postcode — Swansea

About the SA4 Postcode District

Frequently Asked Questions

Other Swansea Postcode Districts