Calderdale Medium Layer Super Output Areas (MSOAs), Lower Layer Super Output Areas (LSOAs), Census Output Areas (COAs) and their constituent postcodes.
According to the National Statistics Postcode Lookup facility, on the Office for National Statistics (ONS) Geoportal, there are currently 7,247 postcodes in Calderdale, and this changes slightly during each year.
There are 27 MSOAs, 128 LSOAs, and 668 COAs in Calderdale. MSOAs, LSOAs and COAs have been defined by the Office for National Statistics (ONS) to assist with reporting statistical information for small geographic areas. They were last updated following the 2011 National Census.