Objective : Our aim was to determine the incidence of surgically managed pelvic organ prolapse and stress urinary incontinence and to describe their clinical characteristics and etiologic factors. Material and method : Our retrospective study was included 1591 patients visited to Severance Hospital from 1986 to 2003. We reviewd 220 cases who admitted with either stress urinary incontinence and pelvic organ prolapse. Variables included age, weight, vaginal parity, medical history, menstruation status. Results : The age specific incidence and operation rate increased with advancing age. Old age, postmenopausal, parous, obesity were related to pelvic organ prolapse and urinary incontinence. The prevalence was 3% in the yongest age group, increasing to 29.8% in the sexagenarian. Of all women, 64.5% were normal weight women, but these disease were more prevalent among overweight than underweight(29.5% versus 0.4%). The parous women were more prevalent than nulliparous women(40% versus 0.4%). And postmenopause women were more prevalent than premenoipause women(72.7% versus 27.3%). Conclusion : Pelvic floor dysfunction and stress urinary incontinence are major health issue in older women. Our results warrant further epidemiologic research in order to determine the etiology, natural history, and long tern treatment outcome of these conditions.