What area is the SO45 postcode in?

SO45 is a postcode district in Southampton, Southampton, South East, England. It is part of the SO postcode area.

How many addresses are in the SO45 postcode?

The SO45 postcode district covers Southampton in Southampton. The exact address count can be retrieved via the APITier Postcode Lookup API.

How do I look up addresses in SO45 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 SO45. The response returns all PAF addresses as structured JSON including building name, number, street, town, county, and geocoordinates.

Royal Mail PAF · South East

SO45 Postcode — Southampton

SO45 is a postcode district in Southampton, Southampton, South East, England. Use the lookup below to explore addresses within this postcode district.

SO45

Postcode District

SO — Southampton

Area

South East

Region

Royal Mail PAF

Data Source

Postcode Lookup — SO45 DistrictSample

{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "SO45 1AA",
    "quality": 1,
    "eastings": 443050,
    "northings": 167338,
    "country": "England",
    "nhs_ha": "South East",
    "longitude": -1.385,
    "latitude": 50.958,
    "european_electoral_region": "South East",
    "primary_care_trust": "Southampton",
    "region": "South East",
    "lsoa": "Southampton 001A",
    "msoa": "Southampton 001",
    "incode": "1AA",
    "outcode": "SO45",
    "parliamentary_constituency": "Southampton",
    "admin_district": "Southampton",
    "parish": "Southampton, unparished area",
    "admin_county": "South East",
    "admin_ward": "Southampton Central",
    "ced": null,
    "ccg": "NHS South East",
    "nuts": "Southampton",
    "codes": {
      "admin_district": "E07000000",
      "admin_county": "E10000000",
      "admin_ward": "E05000000",
      "parish": "E43000000",
      "parliamentary_constituency": "E14000000",
      "ccg": "E38000000",
      "lsoa": "E01000000",
      "msoa": "E02000000"
    }
  }
}

About the SO45 Postcode District

The SO45 postcode district is part of the Southampton (SO) postcode area, covering Southampton and surrounding areas in South East, England.

Postcodes in the SO45 district follow the format SO45 nXX where n is a digit and XX are letters. Each inward code identifies a specific delivery walk within the district.

The wider Southampton postcode area (SO) also covers: Eastleigh, Romsey, Hythe, Lyndhurst, Fordingbridge.

Frequently Asked Questions

What area does the SO45 postcode cover?

The SO45 postcode district covers Southampton in Southampton, South East, England. It is one of 24 districts in the SO postcode area.

How do I look up all addresses in the SO45 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 SO45. The API returns all Royal Mail PAF addresses as structured JSON.

Is SO45 a valid UK postcode district?

Yes. SO45 is a Royal Mail postcode district in Southampton, England. Full UK postcodes in this district follow the format SO45 followed by a digit and two letters (e.g. SO45 1AA).

SO45 Postcode — Southampton

About the SO45 Postcode District

Frequently Asked Questions

Other Southampton Postcode Districts