What area is the NN1 postcode in?

NN1 is a postcode district in Northampton, Northampton, East Midlands, England. It is part of the NN postcode area.

How many addresses are in the NN1 postcode?

The NN1 postcode district covers Northampton in Northampton. The exact address count can be retrieved via the APITier Postcode Lookup API.

How do I look up addresses in NN1 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 NN1. The response returns all PAF addresses as structured JSON including building name, number, street, town, county, and geocoordinates.

Royal Mail PAF · East Midlands

NN1 Postcode — Northampton

NN1 is a postcode district in Northampton, Northampton, East Midlands, England. Use the lookup below to explore addresses within this postcode district.

NN1

Postcode District

NN — Northampton

Area

East Midlands

Region

Royal Mail PAF

Data Source

Postcode Lookup — NN1 DistrictSample

{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "NN1 1AA",
    "quality": 1,
    "eastings": 480486,
    "northings": 310528,
    "country": "England",
    "nhs_ha": "East Midlands",
    "longitude": -0.8502,
    "latitude": 52.248,
    "european_electoral_region": "East Midlands",
    "primary_care_trust": "Northampton",
    "region": "East Midlands",
    "lsoa": "Northampton 001A",
    "msoa": "Northampton 001",
    "incode": "1AA",
    "outcode": "NN1",
    "parliamentary_constituency": "Northampton",
    "admin_district": "Northampton",
    "parish": "Northampton, unparished area",
    "admin_county": "East Midlands",
    "admin_ward": "Northampton Central",
    "ced": null,
    "ccg": "NHS East Midlands",
    "nuts": "Northampton",
    "codes": {
      "admin_district": "E07000000",
      "admin_county": "E10000000",
      "admin_ward": "E05000000",
      "parish": "E43000000",
      "parliamentary_constituency": "E14000000",
      "ccg": "E38000000",
      "lsoa": "E01000000",
      "msoa": "E02000000"
    }
  }
}

About the NN1 Postcode District

The NN1 postcode district is part of the Northampton (NN) postcode area, covering Northampton and surrounding areas in East Midlands, England.

Postcodes in the NN1 district follow the format NN1 nXX where n is a digit and XX are letters. Each inward code identifies a specific delivery walk within the district.

The wider Northampton postcode area (NN) also covers: Kettering, Wellingborough, Corby, Daventry, Towcester.

Frequently Asked Questions

What area does the NN1 postcode cover?

The NN1 postcode district covers Northampton in Northampton, East Midlands, England. It is one of 19 districts in the NN postcode area.

How do I look up all addresses in the NN1 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 NN1. The API returns all Royal Mail PAF addresses as structured JSON.

Is NN1 a valid UK postcode district?

Yes. NN1 is a Royal Mail postcode district in Northampton, England. Full UK postcodes in this district follow the format NN1 followed by a digit and two letters (e.g. NN1 1AA).

NN1 Postcode — Northampton

About the NN1 Postcode District

Frequently Asked Questions

Other Northampton Postcode Districts