Despite all efforts in the past few decades, the pace of male-female wage convergence was very slow. San Francisco Bay Area as an advanced, culturally diverse and a pioneer socioeconomically metropolitan suffers from male-female wage discrimination. It is the purpose of this study to estimate the average extent of discrimination against female workers in the Bay Area and to provide a quantitative assessment of the sources of wage inequality using Blinder-Oaxaca decomposition. The results indicate that influencing factors such as education, marital status, and work experience are rewarded differently between men and women. Additionally, the major portion of the wage-gap remains unexplained with human capital characteristics