(edited by Walid bendi)
I think a sizable part of the world is doing fine.
SPOILERS DOWN BELOW FOR A QUIET PLACE: PART II
So, in the opening scene of Part II, we see a meteor full of Death Angels crash in the Abbotts’ home town, which is in what appear to be North Carolina, USA (given the map shown later in the film). This is the only meteor crash with Death Angels shown, with the only other possible shown location being in Shanghai, China (there was a news broadcast saying Shanghai was facing high death tolls, and when Lee questions a pharmacy owner on what happened, he says it was a missile “or something”). The Death Angels are also shown to not be able to swim, drowning upon entering the sea. Given that there were crashes only in the Americas and Eurasia, I think it’s fair to assume that many island nations, like Indonesia, Japan, the UK, Ireland, and Australia, along with other landlocked areas isolated from the crashes like Europe, Africa, and South America, are doing just fine (as fine as they were, pre-Death Angels). I know you could question if the Death Angels would try to expand to Europe, Africa and South America, but I think this is unlikely, as the reason the Death Angels killed everything was so they could recreate the silence of their original homeworld (hence why they don’t eat their kills).
So, what do you think? Could large bastions of humanity still remain amidst the apparent apocalypse?
Well that's a good video to take care of those Death Angels with American military firepower & common sense.