The US population is at 320.09 million
people as of January 1. It is an increase of 11.35 million since the
last census. During January 2015, the US is expected to have one
birth every eight seconds and one death every 12 seconds. Net
migration is expected to add one person to the US population every
33 seconds, according to the Census Bureau.
The combination of births, deaths, and net migration will add at
least one person to the US population every 16 seconds.