What area is the CH1 postcode in?

CH1 is a postcode district in Chester, Chester, North West, England. It is part of the CH postcode area.

How many addresses are in the CH1 postcode?

The CH1 postcode district covers Chester in Chester. The exact address count can be retrieved via the APITier Postcode Lookup API.

How do I look up addresses in CH1 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 CH1. The response returns all PAF addresses as structured JSON including building name, number, street, town, county, and geocoordinates.

Royal Mail PAF · North West

CH1 Postcode — Chester

CH1 is a postcode district in Chester, Chester, North West, England. Use the lookup below to explore addresses within this postcode district.

CH1

Postcode District

CH — Chester

Area

North West

Region

Royal Mail PAF

Data Source

Postcode Lookup — CH1 DistrictSample

{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "CH1 1AA",
    "quality": 1,
    "eastings": 341060,
    "northings": 416466,
    "country": "England",
    "nhs_ha": "North West",
    "longitude": -2.842,
    "latitude": 53.2024,
    "european_electoral_region": "North West",
    "primary_care_trust": "Chester",
    "region": "North West",
    "lsoa": "Chester 001A",
    "msoa": "Chester 001",
    "incode": "1AA",
    "outcode": "CH1",
    "parliamentary_constituency": "Chester",
    "admin_district": "Chester",
    "parish": "Chester, unparished area",
    "admin_county": "North West",
    "admin_ward": "Chester Central",
    "ced": null,
    "ccg": "NHS North West",
    "nuts": "Chester",
    "codes": {
      "admin_district": "E07000000",
      "admin_county": "E10000000",
      "admin_ward": "E05000000",
      "parish": "E43000000",
      "parliamentary_constituency": "E14000000",
      "ccg": "E38000000",
      "lsoa": "E01000000",
      "msoa": "E02000000"
    }
  }
}

About the CH1 Postcode District

The CH1 postcode district is part of the Chester (CH) postcode area, covering Chester and surrounding areas in North West, England.

Postcodes in the CH1 district follow the format CH1 nXX where n is a digit and XX are letters. Each inward code identifies a specific delivery walk within the district.

The wider Chester postcode area (CH) also covers: Ellesmere Port, Crewe, Nantwich, Wrexham.

Frequently Asked Questions

What area does the CH1 postcode cover?

The CH1 postcode district covers Chester in Chester, North West, England. It is one of 24 districts in the CH postcode area.

How do I look up all addresses in the CH1 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 CH1. The API returns all Royal Mail PAF addresses as structured JSON.

Is CH1 a valid UK postcode district?

Yes. CH1 is a Royal Mail postcode district in Chester, England. Full UK postcodes in this district follow the format CH1 followed by a digit and two letters (e.g. CH1 1AA).

CH1 Postcode — Chester

About the CH1 Postcode District

Frequently Asked Questions

Other Chester Postcode Districts