Meniere's disease is a disorder of the membranous labyrinth of the inner ear manifesting as vertigo, tinnitus, sensory neural hearing loss and aural fullness of known or unknown origin. The aim of this chapter is to estimate the prevalence of Ménière's disease (MD) and its relationship with demographic factors, symptoms and conditions that are known. Few articles have been published on the epidemiology of Meniere's disease from 1975 to 1990, studies from Japan indicated a fairly constant prevalence of 17 cases per 100,000 population. These studies were undertaken by a Research Committee on Meniere's Disease. Kotimaki and colleagues analysed the Finnish population of five million people between 1992 and 1996. A prevalence of 43/100,000 and an average yearly incidence of 4.3/100,000 population were found by the authors. MD is 1-3 times higher in women than in men and also observed a higher prevalence in adulthood and white people. MD seems to be much more common in white adults with higher body mass index categories, in their fourth and fifth decade. However, in recent years, especially in the last decades, there have been several safe and effective medical and surgical therapies for the treatment of the disease and its sequels.