Comment Re:Why would it need studies? (Score 1) 345
UK postcodes are just a grid 1km I think, I am on the wrong computer to check. You can always import that leaked Postcode db into a mapping software to see what I mean. This normally translates in to a part of a street.
Not a grid, and their size does vary, but they are generally only a few hundred yards across; Google Maps will do an outline of the approximate area that a postcode covers, but as a rule of thumb a postcode covers an average of 15 properties.
Oh, and forget using any 'leaked postcode db'. The Ordnance Survey made available a CSV file that maps postcodes to coordinates as part of their OpenData project a few years ago; usage only requires attribution, not payment.
They are a grid on the data that I got from http://wikileaks.org/wiki/UK_government_database_of_all_1,841,177_post_codes _together_with_precise_geographic_coordinates_and_other_information,_8_Jul_2009
**take out the space in the url, I got a filter error trying to post**
The only reason I found that there was a variance was due to holes like parks etc... There are just gaps in the matrix.
The opendata project doesn't have postcodes, I just checked, but it does have some good stuff - thanks.