This data set lists Calderdale Medium Layer Super Output Areas (MSOAs), Lower Layer Super Output Areas (LSOAs), Census Output Areas (COAs), Built Up Areas (BUAs), Built up area sub-divisions (BUASDs) and their constituent postcodes. It is based on the National Statistics Postcode Lookup (NSPL) facility, on the Office for National Statistics (ONS) Geoportal, and is updated every three months. MSOAs, LSOAs, COAs, BUAs, BUASDs have been de...

Open Postcode Geo is a postcode dataset and API optimised for geocoding applications. You can use Open Postcode Geo to geocode a dataset, geocode user input, and therefore build a proximity search. Data is derived from the ONS (Office for National Statistics) postcode database and is free to use, subject to including attributions to ONS, OS (Ordnance Survey) and Royal Mail. Information is also provided on a range of topics, including ed...