I wrote recently about the trouble I’ve had figuring out what to do about counties in the postcode data on my site. Thanks to a very helpful comment on that post, I finally figured what I hope is the correct course of action. Previously I only showed county information for postcodes that were located in a county council. The suggestion was to map postcodes to ceremonial counties, which I wasn’t really aware of before. But a quick look at Wikipedia suggested they was a pretty simple mapping between them and administrative areas, with the exception of a little complexity in Stockton-on-Tees. So that’s what I’ve done. You can now download postcode data for each English county here. Hopefully this meets all your county needs!