What area is the UB4 postcode in?

UB4 is a postcode district in Southall, Southall, London, England. It is part of the UB postcode area.

How many addresses are in the UB4 postcode?

The UB4 postcode district covers Southall in Southall. The exact address count can be retrieved via the APITier Postcode Lookup API.

How do I look up addresses in UB4 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 UB4. The response returns all PAF addresses as structured JSON including building name, number, street, town, county, and geocoordinates.

Royal Mail PAF · London

UB4 Postcode — Southall

UB4 is a postcode district in Southall, Southall, London, England. Use the lookup below to explore addresses within this postcode district.

UB4

Postcode District

UB — Southall

Area

London

Region

Royal Mail PAF

Data Source

Postcode Lookup — UB4 DistrictSample

{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "UB4 1AA",
    "quality": 1,
    "eastings": 511510,
    "northings": 236158,
    "country": "England",
    "nhs_ha": "London",
    "longitude": -0.407,
    "latitude": 51.578,
    "european_electoral_region": "London",
    "primary_care_trust": "Southall",
    "region": "London",
    "lsoa": "Southall 001A",
    "msoa": "Southall 001",
    "incode": "1AA",
    "outcode": "UB4",
    "parliamentary_constituency": "Southall",
    "admin_district": "Southall",
    "parish": "Southall, unparished area",
    "admin_county": null,
    "admin_ward": "Southall Central",
    "ced": null,
    "ccg": "NHS London",
    "nuts": "Southall",
    "codes": {
      "admin_district": "E07000000",
      "admin_county": "E99999999",
      "admin_ward": "E05000000",
      "parish": "E43000000",
      "parliamentary_constituency": "E14000000",
      "ccg": "E38000000",
      "lsoa": "E01000000",
      "msoa": "E02000000"
    }
  }
}

About the UB4 Postcode District

The UB4 postcode district is part of the Southall (UB) postcode area, covering Southall and surrounding areas in London, England.

Postcodes in the UB4 district follow the format UB4 nXX where n is a digit and XX are letters. Each inward code identifies a specific delivery walk within the district.

The wider Southall postcode area (UB) also covers: Uxbridge, Hayes, Yiewsley, West Drayton, Northolt.

Frequently Asked Questions

What area does the UB4 postcode cover?

The UB4 postcode district covers Southall in Southall, London, England. It is one of 11 districts in the UB postcode area.

How do I look up all addresses in the UB4 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 UB4. The API returns all Royal Mail PAF addresses as structured JSON.

Is UB4 a valid UK postcode district?

Yes. UB4 is a Royal Mail postcode district in Southall, England. Full UK postcodes in this district follow the format UB4 followed by a digit and two letters (e.g. UB4 1AA).

UB4 Postcode — Southall

About the UB4 Postcode District

Frequently Asked Questions

Other Southall Postcode Districts