In 2015 the total population in the United States was 320,896,618 people, of those 3,982,697 were neonates (0-
27 days) and 3,975,424 were infants. In the same year
15,652 deaths occurred in children under 28 days of age
and 23,455 deaths occurred in children from 28 days up to 1
year of age. Calculated neonatal and infant mortality rates in
the U. S. in 2015.