Number of adults aged 65 and older

In 2026, the number of adults aged 65 and older is estimated to reach 65.1 million, up 2.8% from the previous year and extending a period of rapid expansion in the senior population. Growth in 2026 is powered by the baby-boomer generation, which continues to age into this cohort at a pace of roughly 10,000 people turning 65 each day, ensuring that older adults claim a rising share of the national population. Ongoing improvements in life expectancy following the COVID-19 shock, supported by better management of chronic diseases, safer environments and improving public health conditions, enable more people to remain in this age group for longer. Together, these forces keep the senior population on a strong upward trajectory even as younger age groups grow far more slowly, pushing the United States deeper into an era in which one in five residents is 65 or older.

Over the five years through 2026, the population of adults aged 65 and older rose sharply from about 55.9 million to 65.1 million, translating into a compound annual growth rate of 3.10%. The main engine of this surge is demographic. Baby boomers, born between 1946 and 1964, have moved en masse into traditional retirement ages, and by the early 2020s, they were already driving the fastest growth in the 65-plus population since the late 19th century. This influx more than offset deaths among existing seniors, especially as medical advances improved survival rates for heart disease, cancer and other chronic conditions that historically cut lives short in older age. Public health responses during and after the pandemic—ranging from widespread vaccination to stronger infection-control protocols in hospitals, nursing homes and community settings—further limited excess mortality among older adults relative to what might have occurred, preserving the size of this cohort.

The broader environment over 2021-2026 also became more accommodating to an aging population, reinforcing the rise in adults aged 65 and older. Governments and private providers expanded senior-focused housing, in-home care and long-term care infrastructure, making it easier for older adults to age in place or transition into specialized facilities as needed. Local investments in public safety and accessibility—such as safer streetscapes, better emergency response and more senior-friendly transit—helped reduce preventable injuries and extended the time people can live independently at advanced ages. These structural shifts, layered on top of the baby-boomer wave and improving longevity, produced a five-year period of unusually strong growth in the 65-plus population and ensured that older adults became an increasingly central driver of US demographic and economic dynamics.