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. Postcodes allocated by the NSPL dataset may d...