The United States reached a record population of 341.8 million people in 2025, just as the nation prepares to celebrate the 250th anniversary of the Declaration of Independence this July 4. USAFacts released a comprehensive demographic snapshot tracking how dramatically the country has changed, revealing an aging, diversifying nation where immigration now drives nearly all population growth. The semiquincentennial — meaning half of 500 years — marks a pivotal moment as fundamental shifts reshape who Americans are and how they live.
The demographic data tells a story of sweeping change across nearly every measure. The fertility rate has plummeted by more than half over the past century, from 110.9 births per 1,000 women in 1924 to just 53.8 in 2024. Americans 65 and older now make up the country's largest age group at 18.9% of the population, nearly one in five people. The nation's racial composition has transformed too: in 1990, 75.6% of people identified as white and non-Hispanic, but by 2024 that figure dropped to 57.5%, while the Hispanic share more than doubled from 9.0% to 20.0%. For the first time ever, people living alone became the largest household category in 2025 at 29.5%, edging out married couples without children at 29.3%. Nearly half of adults — 49.3% — now hold an associate's degree or higher, with the largest workforce concentrated in private education and health services at 27.9 million people as of May 2026.
The report finds that immigration has become the primary driver of population growth since 2020, marking a fundamental shift from the pre-pandemic era when natural population change — births outnumbering deaths — fueled most growth. According to the data, women are having children significantly later in life: 20 years ago in 2004, women ages 25 to 29 had the highest birth rate, but in 2024 the peak shifted to women ages 30 to 34. The Social Security Administration expects the population 65 and older to surge by 26% over the next decade, from about 65 million in 2025 to an estimated 77 million in 2035. The report notes that unemployment hovered at 4.3% in May 2026 and has remained between 4.0% and 4.5% since June 2024, while the median household income stood at $81,600 in 2024, with nearly three in five households earning less than $100,000 per year.
The report explains that the slowing pace of population growth stems from three interconnected forces: lower birth rates, an aging population, and shifting immigration patterns. The aging trend accelerated after people born during the 1957 baby boom peak — when a record 4.3 million births occurred — turned 65 in 2022, causing the 65-and-older population share to jump nearly 7% since then. Geographic concentration intensifies these patterns: one in five Americans now lives in either California or Texas, with 39.4 million calling California home and 31.7 million in Texas. State-level variations show stark contrasts, from South Dakota's 2.2% unemployment rate to California, Delaware, and Nevada each hitting 5.3% in April 2026, and median household incomes ranging from Mississippi's $59,100 to Massachusetts' $104,800.
The data reveals a nation at an inflection point as it enters its third century. With immigration now essential to maintaining population growth and the 65-and-older cohort set to expand by another 12 million people within a decade, the pressures on social services, healthcare systems, and workforce pipelines will only intensify. The transformation from a majority-white nation to an increasingly diverse one, combined with record numbers of people living alone and delayed childbearing, signals that the America of 2026 looks profoundly different from the one that existed even a generation ago. As the country marks 250 years since independence, it's navigating demographic forces that will define the next quarter-millennium.