What area is the RG4 postcode in?

RG4 is a postcode district in Reading, Reading, South East, England. It is part of the RG postcode area.

How many addresses are in the RG4 postcode?

The RG4 postcode district covers Reading in Reading. The exact address count can be retrieved via the APITier Postcode Lookup API.

How do I look up addresses in RG4 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 RG4. The response returns all PAF addresses as structured JSON including building name, number, street, town, county, and geocoordinates.

Royal Mail PAF · South East

RG4 Postcode — Reading

RG4 is a postcode district in Reading, Reading, South East, England. Use the lookup below to explore addresses within this postcode district.

RG4

Postcode District

RG — Reading

Area

South East

Region

Royal Mail PAF

Data Source

Postcode Lookup — RG4 DistrictSample

{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "RG4 1AA",
    "quality": 1,
    "eastings": 466976,
    "northings": 224658,
    "country": "England",
    "nhs_ha": "South East",
    "longitude": -1.0432,
    "latitude": 51.4744,
    "european_electoral_region": "South East",
    "primary_care_trust": "Reading",
    "region": "South East",
    "lsoa": "Reading 001A",
    "msoa": "Reading 001",
    "incode": "1AA",
    "outcode": "RG4",
    "parliamentary_constituency": "Reading",
    "admin_district": "Reading",
    "parish": "Reading, unparished area",
    "admin_county": "South East",
    "admin_ward": "Reading Central",
    "ced": null,
    "ccg": "NHS South East",
    "nuts": "Reading",
    "codes": {
      "admin_district": "E07000000",
      "admin_county": "E10000000",
      "admin_ward": "E05000000",
      "parish": "E43000000",
      "parliamentary_constituency": "E14000000",
      "ccg": "E38000000",
      "lsoa": "E01000000",
      "msoa": "E02000000"
    }
  }
}

About the RG4 Postcode District

The RG4 postcode district is part of the Reading (RG) postcode area, covering Reading and surrounding areas in South East, England.

Postcodes in the RG4 district follow the format RG4 nXX where n is a digit and XX are letters. Each inward code identifies a specific delivery walk within the district.

The wider Reading postcode area (RG) also covers: Basingstoke, Andover, Hook, Tadley, Thatcham.

Frequently Asked Questions

What area does the RG4 postcode cover?

The RG4 postcode district covers Reading in Reading, South East, England. It is one of 32 districts in the RG postcode area.

How do I look up all addresses in the RG4 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 RG4. The API returns all Royal Mail PAF addresses as structured JSON.

Is RG4 a valid UK postcode district?

Yes. RG4 is a Royal Mail postcode district in Reading, England. Full UK postcodes in this district follow the format RG4 followed by a digit and two letters (e.g. RG4 1AA).

RG4 Postcode — Reading

About the RG4 Postcode District

Frequently Asked Questions

Other Reading Postcode Districts