When looking at who is consuming stablecoins and which ones, you can consult diagrams like this one below, where Tether is the main one followed by USDC.

But this does not give you a lot of context.
Now if you look at this map, where 73% of the world’s income is possessed by 14% of the population, you can figure out what the people outside of that area is doing.

Yuan Renminbi is a very special case, it’s a growing currency where the Chinese government has tried for decades to have under control with respect the USD.

Indian Rupee is another example that deserves attention, a powerful country that keeps the currency very low.

What about the others?
Stablecoins are vital for individuals in countries facing chronic currency devaluation. To preserve their purchasing power, many systematically move their savings into assets like Bitcoin or stablecoins. In the long term, it is likely that some local currencies lacking public trust will disappear, as this wave of digitization renders unstable fiat currencies obsolete.