Talk:Counties of the United Kingdom

How are the population numbers calculated? --Inops (talk) 15:23, 27 December 2017 (UTC)

The Office for National Statistics provide a dataset of each postcode with its population and latitude/longitude figures. The correct county is determined for each postcode by using its co-ordinates to calculate in which of the county border data polygons it is situated. Once all the postcodes are allocated to a county, it is then a simple matter of summing up all the postcode populations for each county to arrive at a total. Owain (talk) 21:05, 27 December 2017 (UTC)