The U.S. Census Bureau estimates that the population of the United States was 318,857,056 on July 1, 2014. The bureau estimates that 317.8 million people lived in the United States on Jan. 1, 2014. The country's population increased by an estimated 2.2 million during 2014.
The government did not take an official census in 2014, since it only takes the census in years that are multiples of 10. However, the Census Bureau releases monthly estimates for the nation's population and annual estimates for states and regions with populations of 50,000 people or more. Populations often change dramatically between censuses. For example, the population of Austin, Texas, was 790,390 in 2010, but increased to an estimated 912,791 by 2014.