1) "Cost of living in the US locations"
2) "Cost of living in the US different locations"
NOT A TEACHER
(1) Do you wish to say something like:
I want to know about the cost of living in the various American states.
(2) For example, the cost of living here in Caifornia is very high ("through the roof,"
as we say) while the cost of living in some other states is much lower.
(3) Kindly remember that you may wish to use the adjective "American."
For example, we would say "American English," not "U.S. English." Sometimes,
though, they seem to be interchangeable: U.S. citizens/ American citizens. Maybe
another poster can explain to us the "rule."