I'm trying to narrow down my postal code table and limit the number or rows to 1 per postal code. I've not had a problem with Canada and the USA. However with Great Britain the data from GeoNames has several location names per posta code in some areas.
For instance, ZE2 in Scotland has 162 locations within it, most have the same lat & lon. Apparently it's one of the postal codes for the Shetland Isles.
How do I find the major location/town within a given postal code? I've tried some sites like http://www.postcodearea.co.uk/postaltowns/shetland-isles/ze2/ but they don't have that sort of information. Where can I find that sort of information?
I'm not building a geolocation map of great detail. This is for a hobby site to help people find others within a reasonable distance.