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API Endpoints

Census Demographics

Year of Arrival in UK

Tokens
× 1

API Credit Cost

Endpoint Overview

Census2021 Demographics

The Year of Arrival in UK endpoint provides data on the specific years residents in a postcode area arrived in the UK, helping to understand migration trends and historical population changes.

Coverage

EnglandEngland
WalesWales

Update Frequency

Census

Request Format

HTTP Method:

GET

To use the API you should send an HTTP request to the following endpoint URL. This will return a JSON response.

https://api.postcodearea.co.uk/census-ts015/?key=&postcode={postcode}

Note that your key has automatically been added to the API endpoint for convenience.

Querystring Parameters:

{postcode}

A valid UK postcode (e.g., SW1A 1AA). Note that you can send the postcode with or without the space separating the outward and inward codes. For example, both "SW1A 1AA" and "SW1A1AA" are both valid.

{api_key}

A valid API key that authenticates your account.

Authorisation

For every endpoint request your API Key should be sent as part of the querystring:

https://api.postcodearea.co.uk/census-ts015/?key={api_key}&postcode=WS3+3PD

For example:

https://api.postcodearea.co.uk/census-ts015/?key=&postcode=WS3+3PD

Example Request and Response

If the above URL endpoint exists and the API key is valid, our system will return the following example response:

https://api.postcodearea.co.uk/census-ts015/?key=&postcode=WS3+3PD
{"data":[{"Postcode":"ST20 0LY","Year of arrival in the UK: Total: All usual residents":310,"Year of arrival in the UK: Born in the UK":308,"Year of arrival in the UK: Arrived before 1951":0,"Year of arrival in the UK: Arrived 1951 to 1960":0,"Year of arrival in the UK: Arrived 1961 to 1970":0,"Year of arrival in the UK: Arrived 1971 to 1980":1,"Year of arrival in the UK: Arrived 1981 to 1990":0,"Year of arrival in the UK: Arrived 1991 to 2000":0,"Year of arrival in the UK: Arrived 2001 to 2010":1,"Year of arrival in the UK: Arrived 2011 to 2013":0,"Year of arrival in the UK: Arrived 2014 to 2016":0,"Year of arrival in the UK: Arrived 2017 to 2019":0,"Year of arrival in the UK: Arrived 2020 to 2021":0}],"response_time":0,"Source":"PostcodeArea API","Output Area":"OA","Radius":10,"Distance Unit":"Mile","Records":1,"Unique Fields":1,"Referrer":"api.postcodearea.co.uk","Host":"https://api.postcodearea.co.uk/census-ts015/?key=pa_XWQAV24RXCUU19NGUFM11TKTLN&postcode=st200ly","Endpoint":"/census-ts015/?key=pa_XWQAV24RXCUU19NGUFM11TKTLN&postcode=st200ly"}

Error Handling

HTTP Status Code Error Message Reason
400 Invalid postcode format The postcode provided is not valid.
401 Unauthorised request API key missing or invalid.
404 Postcode not found No data available for the given postcode.
404 No Results Found No data available for the given radius.
429 Too many requests Exceeded rate limit.
500 Internal server error An unexpected issue occurred.

Caching Policy

You may temporarily cache data retrieved from the API for performance optimisation purposes, provided that the cached data is:

  1. Stored in-memory only (e.g., application-level cache).
  2. Retained for no longer than one hour.

Caching API data to any persistent storage, including but not limited to databases, files, or external systems, constitutes a breach of our API Terms and Conditions. Such actions are strictly prohibited to ensure data accuracy and compliance with our licensing agreements.

If you have specific requirements for extended caching, you must seek prior written consent from us.

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