Is a geordie a person from Newcastle?
That's what wikipedia says:
Geordie is a regional nickname for a person from the Tyneside region of England, or the name of the English dialect spoken by its inhabitants. Depending on who is using the term, the catchment area for the term Geordie can, depending on the speaker be as big as the whole of north east of England, or as small as the city of Newcastle upon Tyne. Sunderland, however, uses the regional nickname "Mackem" as opposed to Geordie. Similarly, people from the Teesside area (Middlesbrough, Stockton-on-Tees, Redcar, Billingham and surrounding settlements) of the north east are known as 'Smoggies'.