Where is forks located at in twilight?

In the Twilight Saga by Stephenie Meyer, the Cullen coven of vampires live in Forks, Washington, USA.

The rest of the vampires mentioned in her books live in Italy (Volturi), Alaska (Denali), the Amazon, Egypt, Ireland, Romania, or are nomadic travelers of the USA.

In real life, however, vampires do not exist, nor do they live in Forks.