The senior population in the U.S. has grown as the baby-boom generation has progressed into the 65 years and older age group. In 2023, there were 59,307,056 Americans over the age of 65.

With enormous, cheap energy at its disposal, the human population grew rapidly from 1 billion in 1800 to 2 billion in 1930, 4 billion in 1975, and over 7.5 billion today. If the current course is not ...

Over the past three decades, societies around the world have made remarkable progress in improving population data gathering, analysis, and use. New population figures, disaggregated by age ...