what generation is growing the fastest in the us in population

The fastest-growing generation in the U.S. right now is Gen Z , based on the latest demographic trend reporting that points to younger cohorts and immigrant-linked growth reshaping the population.

Quick scoop

• The broad U.S. population is still aging, and the 65+ group has grown quickly over the last decade.
• But when people ask which generation is growing fastest, the answer is usually Gen Z in relative terms, because it is the youngest large adult cohort and still expanding as younger members age into adulthood.
• A big reason is immigration and family formation trends, which are boosting younger and more diverse populations.

Why this matters

• Population growth is not evenly spread across age groups.
• Older Americans are increasing because of longevity, while younger generations are growing through births, immigration, and aging into new life stages.
• So the “fastest growing” answer depends on whether you mean share of population , absolute number , or growth rate.

One nuance

• If you mean the fastest-growing age group , that is often the 65+ population in recent Census-era reporting.
• If you mean the generation gaining momentum among working-age and household-forming adults , Gen Z is the best fit.

Bottom line

For a plain-English answer: Gen Z is the fastest-growing generation in the U.S. in the common generational sense , while the older population is also growing very quickly in age-based terms.