What area is the WD18 postcode in?

WD18 is a postcode district in Watford, Watford, East of England, England. It is part of the WD postcode area.

How many addresses are in the WD18 postcode?

The WD18 postcode district covers Watford in Watford. The exact address count can be retrieved via the APITier Postcode Lookup API.

How do I look up addresses in WD18 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 WD18. The response returns all PAF addresses as structured JSON including building name, number, street, town, county, and geocoordinates.

Royal Mail PAF · East of England

WD18 Postcode — Watford

WD18 is a postcode district in Watford, Watford, East of England, England. Use the lookup below to explore addresses within this postcode district.

WD18

Postcode District

WD — Watford

Area

East of England

Region

Royal Mail PAF

Data Source

Postcode Lookup — WD18 DistrictSample

{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "WD18 1AA",
    "quality": 1,
    "eastings": 510782,
    "northings": 249478,
    "country": "England",
    "nhs_ha": "East of England",
    "longitude": -0.4174,
    "latitude": 51.698,
    "european_electoral_region": "East of England",
    "primary_care_trust": "Watford",
    "region": "East of England",
    "lsoa": "Watford 001A",
    "msoa": "Watford 001",
    "incode": "1AA",
    "outcode": "WD18",
    "parliamentary_constituency": "Watford",
    "admin_district": "Watford",
    "parish": "Watford, unparished area",
    "admin_county": "East of England",
    "admin_ward": "Watford Central",
    "ced": null,
    "ccg": "NHS East of England",
    "nuts": "Watford",
    "codes": {
      "admin_district": "E07000000",
      "admin_county": "E10000000",
      "admin_ward": "E05000000",
      "parish": "E43000000",
      "parliamentary_constituency": "E14000000",
      "ccg": "E38000000",
      "lsoa": "E01000000",
      "msoa": "E02000000"
    }
  }
}

About the WD18 Postcode District

The WD18 postcode district is part of the Watford (WD) postcode area, covering Watford and surrounding areas in East of England, England.

Postcodes in the WD18 district follow the format WD18 nXX where n is a digit and XX are letters. Each inward code identifies a specific delivery walk within the district.

The wider Watford postcode area (WD) also covers: Rickmansworth, Chorleywood, Borehamwood, Radlett.

Frequently Asked Questions

What area does the WD18 postcode cover?

The WD18 postcode district covers Watford in Watford, East of England, England. It is one of 11 districts in the WD postcode area.

How do I look up all addresses in the WD18 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 WD18. The API returns all Royal Mail PAF addresses as structured JSON.

Is WD18 a valid UK postcode district?

Yes. WD18 is a Royal Mail postcode district in Watford, England. Full UK postcodes in this district follow the format WD18 followed by a digit and two letters (e.g. WD18 1AA).

WD18 Postcode — Watford

About the WD18 Postcode District

Frequently Asked Questions

Other Watford Postcode Districts