The USA population is 325.27 million people as of the year 2019.
The USA population will likely increase by another million and maybe more in the next few years.
But still the USA population is small compared to the China Population and India Population.
China has a population of 1.386 billion people and India has a population currently of 1.339 billion people.
Compared to India and China the USA population is pretty small but still very large.
As more people are born into the world the world and the USA population will increase day by day.