Peterhead is a town in Aberdeenshire, Scotland. It is Aberdeenshire's largest settlement, having a population of 17,947 at the 2001 Census. Peterhead sits at the easternmost point in mainland Scotland. Peterhead is often referred to as 'The Blue Toon' and people who were born there as Blue Tooners. More correctly they are called Bloomogganners, supposedly from the blue worsted stockings that the fishermen originally wore.