In his later years, Pompilius had a profound impact on Roman life, instituting religious rites, legal statutes, and cultural practices that endured long after his reign. Having ruled for 43 years, he is said to have lived until the age of 80. His peaceful reign was markedly devoid of war. After a long and impactful reign, he breathed his last in 673 BC.
According to legend, Pompilius insisted that his body be cremated and his ashes be scattered over Rome, a request that was honored by his subjects. This act was contrasted with the traditional Roman burial custom, further marking him as a distinctive figure in Roman folklore.
Succession that followed his demise was by Tullus Hostilius, known for his warlike disposition. This succession was not familial, but rather decided by the Roman people themselves, indicating the democratic aspects of the regal period. Thus, in death as well as in life, Pompilius showcased the unique blend of tradition and innovation that defined his rule. His influence remained paramount in Roman history, exemplifying the virtues of peace, piety, and divine guidance. His reign became an ideal paradigm for future Roman leaders.