D Man..........
Unfortunately, Bigfoot sightings are not at one particular location....They have been spotted in places like Mongolia, Afghanistan, Pakistan, the U.S., Canada, Indonesia, Scotland, Japan, the Philippines, Vietnam, Malaysia, and China....
But for some reason, California and Washington have the most sightings in the U.S. with 357 and 409 respectively....
Below are some Websites for sightings in various States in the U.S and around the World.....
On the first one below, you can click on your state and your County to see where they have been "allegedly" spotted....
http://www.bfro.net/
http://www.bfro.net/GDB/
http://www.bigfootinfo.org/data/
http://www.texasbigfoot.com/data.html
In terms if I believe they exist, I truly don't know the Answer to that nor has anyone who does not believe in them....But there is one Truth that you can tell People, and it is that everyday, we are discovering hundreds of Species on this Planet (especially underwater) that we have never seen before.........
If you ever meet one, be careful (Sasquatches do not attack humans, but they may stalk or harass humans in a forested area, possibly the result of a territorial conflict) because I don't think they want to be bothered by People (who does and can you Blame them?) and tell him that Biotech Boy said "What's Up" and ask him/her what are their Shoe Size(lol).....
I Hope This Helps....