As of July 4, 2014, the total population of the United States was at 318,881,992 people, as reported by the United States Census Bureau. The United States is the third most populous country in the world, with China leading at 1,361,512,535, and India coming in second place with 1,251,695,584 people.
The United States is made up of 50 states and the federal District of Columbia. California is the most populous state, with 38,802,500 people. Wyoming is the least populous state, with an estimated total population of 544,270 people.