I go off the old Scott Dobson definition. A Geordie is someone born within a mile of either bank of the Tyne, from the mouth as far west as Wylam.
Aye have to agree with that to be honest. I know South Shields is a bit blurred with the sand dancer but yeah probably right tbh.
Nothing worse than a Consett or a Washington 'Geordie' to flip this the other way.