Royal Mail PAF · Yorkshire

YO Postcode — York

YO is a postcode district in York, York, Yorkshire, England. Use the lookup below to explore addresses within this postcode district.

YO
Postcode District
YO — York
Area
Yorkshire
Region
Royal Mail PAF
Data Source
Postcode Lookup — YO DistrictSample
{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "YO 1AA",
    "quality": 1,
    "eastings": 463938,
    "northings": 497141,
    "country": "England",
    "nhs_ha": "Yorkshire",
    "longitude": -1.0866,
    "latitude": 53.9292,
    "european_electoral_region": "Yorkshire",
    "primary_care_trust": "York",
    "region": "Yorkshire",
    "lsoa": "York 001A",
    "msoa": "York 001",
    "incode": "1AA",
    "outcode": "YO",
    "parliamentary_constituency": "York",
    "admin_district": "York",
    "parish": "York, unparished area",
    "admin_county": "Yorkshire",
    "admin_ward": "York Central",
    "ced": null,
    "ccg": "NHS Yorkshire",
    "nuts": "York",
    "codes": {
      "admin_district": "E07000000",
      "admin_county": "E10000000",
      "admin_ward": "E05000000",
      "parish": "E43000000",
      "parliamentary_constituency": "E14000000",
      "ccg": "E38000000",
      "lsoa": "E01000000",
      "msoa": "E02000000"
    }
  }
}

About the YO Postcode District

The YO postcode district is part of the York (YO) postcode area, covering York and surrounding areas in Yorkshire, England.

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

The wider York postcode area (YO) also covers: Scarborough, Malton, Whitby, Filey, Selby, Pickering.

Frequently Asked Questions

What area does the YO postcode cover?

The YO postcode district covers York in York, Yorkshire, England. It is one of 29 districts in the YO postcode area.

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

Is YO a valid UK postcode district?

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

Other York Postcode Districts

Need YO addresses in your app?
The APITier Postcode Lookup API returns full PAF records in under 100ms. Free trial included.