Median Age Of Us Population 2025. The us population has gotten older in the past two decades, with more aging adults and fewer children under the age of 5, new census bureau data reveals. In 2025 is 341,814,420, a 0.53% increase from 2023.
The median age in the united states is 38.1 years. 227 rows the median age of a population is the age at which half the population is older and half is younger (or, alternately, the age at which a person is roughly halfway.