What area is the DE21 postcode in?

DE21 is a postcode district in Derby, Derby, East Midlands, England. It is part of the DE postcode area.

How many addresses are in the DE21 postcode?

The DE21 postcode district covers Derby in Derby. The exact address count can be retrieved via the APITier Postcode Lookup API.

How do I look up addresses in DE21 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 DE21. The response returns all PAF addresses as structured JSON including building name, number, street, town, county, and geocoordinates.

Royal Mail PAF · East Midlands

DE21 Postcode — Derby

DE21 is a postcode district in Derby, Derby, East Midlands, England. Use the lookup below to explore addresses within this postcode district.

DE21

Postcode District

DE — Derby

Area

East Midlands

Region

Royal Mail PAF

Data Source

Postcode Lookup — DE21 DistrictSample

{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "DE21 1AA",
    "quality": 1,
    "eastings": 432074,
    "northings": 385431,
    "country": "England",
    "nhs_ha": "East Midlands",
    "longitude": -1.5418,
    "latitude": 52.9228,
    "european_electoral_region": "East Midlands",
    "primary_care_trust": "Derby",
    "region": "East Midlands",
    "lsoa": "Derby 001A",
    "msoa": "Derby 001",
    "incode": "1AA",
    "outcode": "DE21",
    "parliamentary_constituency": "Derby",
    "admin_district": "Derby",
    "parish": "Derby, unparished area",
    "admin_county": "East Midlands",
    "admin_ward": "Derby Central",
    "ced": null,
    "ccg": "NHS East Midlands",
    "nuts": "Derby",
    "codes": {
      "admin_district": "E07000000",
      "admin_county": "E10000000",
      "admin_ward": "E05000000",
      "parish": "E43000000",
      "parliamentary_constituency": "E14000000",
      "ccg": "E38000000",
      "lsoa": "E01000000",
      "msoa": "E02000000"
    }
  }
}

About the DE21 Postcode District

The DE21 postcode district is part of the Derby (DE) postcode area, covering Derby and surrounding areas in East Midlands, England.

Postcodes in the DE21 district follow the format DE21 nXX where n is a digit and XX are letters. Each inward code identifies a specific delivery walk within the district.

The wider Derby postcode area (DE) also covers: Matlock, Belper, Ilkeston, Swadlincote.

Frequently Asked Questions

What area does the DE21 postcode cover?

The DE21 postcode district covers Derby in Derby, East Midlands, England. It is one of 23 districts in the DE postcode area.

How do I look up all addresses in the DE21 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 DE21. The API returns all Royal Mail PAF addresses as structured JSON.

Is DE21 a valid UK postcode district?

Yes. DE21 is a Royal Mail postcode district in Derby, England. Full UK postcodes in this district follow the format DE21 followed by a digit and two letters (e.g. DE21 1AA).

DE21 Postcode — Derby

About the DE21 Postcode District

Frequently Asked Questions

Other Derby Postcode Districts