I've never seen Bigfoot.
Where I grew up there's a little area that used to be known as Willowbrook back in the coal days. It's not been a town for well over a century now but that's what it's called - kind of like the area my grandmother lived was called Bowman, even though it never officially had that name in any capacity.
Anyway, it's out one of the back county roads, and people in Willowbrook used to see bigfoot all the time.
We only occupy like 4% of the landmass of the US. I am sure there are a lot of things out there that want to be left alone.