America's missing middle: The shrinking 45-64 population

The U.S. population aged 45-64 declined by 3.2% from 2020 to 2025, with the Northeast experiencing the largest drop at 7.1%. This shrinking demographic, part of Generation X and younger baby boomers, raises concerns about fewer experienced adults to mentor workers and care for aging populations. The decline is attributed to aging, migration, and housing shortages in certain regions.