英语对人口提问应该用什么???

what's the population of XX(地名)?
e.g:what's the population of your province?
问国家或大地方的人口都用这个句型.
用how many people 不太适合问国家人口数.

句型是;What's the population of----？
e.g;What's the population of China?
顺便说一下，回答人口多少用large,small.

What is the population of this country?
The country has a population of250000.

what's the population of
或者how much is the population of

What is the population of +地点名词？