Gravity Falls

History

Up to the point of the Transcendence, from which point the AU makes it's divergence from the cannon material, the history of Gravity Falls can be inferred to be pretty much identical to that of the Gravity Falls from the official cartoon.

Post Transcendence

After the Transcendence took place, Gravity Falls became a much more notable town. Being the epicenter of the global change, researchers, cultists, and tourists began to flock to the small town. Despite all the attention it got, it never became anything more than a small Oregon town where interested people would find themselves headed.

It has special importance to Dipper in that the residents, despite his transformation, don't treat him differently from when he was human. For as long as that lasted, it played about as important a role as Mabel in keeping him grounded.