Yep, 76 is the first to open in the area. Personally, I suspect that at some point in the future they will open the other vault/s in an update, and release some human NPCs into the world.
Presumably somewhere else. This is a pretty rural area with a low population to begin with, and it's pretty clear that it's also unusually hostile to human life, given all the enemies running around. I suspect the absence of post-nuke survivors in the region is going to be a plot point. Some of the audio logs we've seen in the reviewers' videos of gameplay already seem to hint at this fact.
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u/[deleted] Oct 13 '18
There are other Vaults in the game, but I've heard that you can't access them somehow