Despite being closed to new enrollees since 1987, CSRS remains the dominant retirement system for federal retirees. The article analyzes why CSRS retirees outnumber those under FERS and discusses the system’s phase-out, average monthly pensions, and age demographics, offering insights into future federal pension dynamics. https://www.federalpensionadvisors.com/post/how-many-retirees-are-under-csrs