Calderdale Medium Super Output Areas (MSOAs), Lower Super Output Areas (LSOAs), Output Areas (OAs) and their constituent postcodes.
There are currently 7,233 postcodes in Calderdale, and this changes slightly during each year.
There are 27 MSOAs, 128 LSOAs, and 668 OAs in Calderdale. MSOAs, LSOAs and OAs 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.