America’s mid-career population shrinks as the nation ages

The United States is facing a growing demographic challenge as its population aged 45 to 64 continues to shrink, raising concerns about the future workforce and community leadership.

New US Census Bureau estimates show this age group fell by 2.68 million between April 2020 and July 2025, dropping from 84 million to 81.3 million.

The Northeast recorded the sharpest decline, followed by the Midwest and West, while the South posted only a slight increase.

At the same time, the country’s median age rose to 39.4, and the population aged 65 and older grew by 16.2%.

Experts say many younger baby boomers are moving into retirement, while the smaller Generation X is replacing them. Rising housing costs and migration to Southern states are also reshaping the workforce. 

Analysts warn that fewer experienced workers could reduce mentorship, strain caregiving, weaken local leadership, and increase pressure on programs such as Social Security and Medicare.