What area is the SN3 postcode in?

SN3 is a postcode district in Swindon, Swindon, South West, England. It is part of the SN postcode area.

How many addresses are in the SN3 postcode?

The SN3 postcode district covers Swindon in Swindon. The exact address count can be retrieved via the APITier Postcode Lookup API.

How do I look up addresses in SN3 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 SN3. The response returns all PAF addresses as structured JSON including building name, number, street, town, county, and geocoordinates.

Royal Mail PAF · South West

SN3 Postcode — Swindon

SN3 is a postcode district in Swindon, Swindon, South West, England. Use the lookup below to explore addresses within this postcode district.

SN3

Postcode District

SN — Swindon

Area

South West

Region

Royal Mail PAF

Data Source

Postcode Lookup — SN3 DistrictSample

{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "SN3 1AA",
    "quality": 1,
    "eastings": 410822,
    "northings": 237490,
    "country": "England",
    "nhs_ha": "South West",
    "longitude": -1.8454,
    "latitude": 51.59,
    "european_electoral_region": "South West",
    "primary_care_trust": "Swindon",
    "region": "South West",
    "lsoa": "Swindon 001A",
    "msoa": "Swindon 001",
    "incode": "1AA",
    "outcode": "SN3",
    "parliamentary_constituency": "Swindon",
    "admin_district": "Swindon",
    "parish": "Swindon, unparished area",
    "admin_county": "South West",
    "admin_ward": "Swindon Central",
    "ced": null,
    "ccg": "NHS South West",
    "nuts": "Swindon",
    "codes": {
      "admin_district": "E07000000",
      "admin_county": "E10000000",
      "admin_ward": "E05000000",
      "parish": "E43000000",
      "parliamentary_constituency": "E14000000",
      "ccg": "E38000000",
      "lsoa": "E01000000",
      "msoa": "E02000000"
    }
  }
}

About the SN3 Postcode District

The SN3 postcode district is part of the Swindon (SN) postcode area, covering Swindon and surrounding areas in South West, England.

Postcodes in the SN3 district follow the format SN3 nXX where n is a digit and XX are letters. Each inward code identifies a specific delivery walk within the district.

The wider Swindon postcode area (SN) also covers: Marlborough, Calne, Chippenham, Royal Wootton Bassett, Highworth.

Frequently Asked Questions

What area does the SN3 postcode cover?

The SN3 postcode district covers Swindon in Swindon, South West, England. It is one of 19 districts in the SN postcode area.

How do I look up all addresses in the SN3 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 SN3. The API returns all Royal Mail PAF addresses as structured JSON.

Is SN3 a valid UK postcode district?

Yes. SN3 is a Royal Mail postcode district in Swindon, England. Full UK postcodes in this district follow the format SN3 followed by a digit and two letters (e.g. SN3 1AA).

SN3 Postcode — Swindon

About the SN3 Postcode District

Frequently Asked Questions

Other Swindon Postcode Districts