The purpose of this study was to identify the variables which affect BMI and the relationships among BMI and socio-demographic variables and health-related behaviors among women in Pajoo city. A self-report questionnaire was used covering questions regarding health, eating habits and health related behaviors such as smoking and drinking behavior, exercise, weight management, etc. Test of significance for differences between the groups were performed with $X^2$-test and hierarchial regression. The level of BMI has a positive relationship with age, married status, and weight management among Pajoo citizens in Korea. This study may be utilized in preparation and planning for dementia prevention programs and policies of older people. Also it can be useful for developing and enhancing various health programs and policies and policies when applied appropriately.