The purposes of this study were to segment department store customers based on patronage orientations of service facilities in a department store and to develop a profile of each segment using store visit behaviors, clothing purchase behaviors and demographics. A total of 453 responses collected from an on-site questionnaire survey to female department store customers was analyzed. Cluster analysis on patronage orientations of department store service facilities identified four groups including: Active patrons(27.3%); Comparison patrons(27.6%); Convenience seekers(27.3%); and Minimum patrons(17.8%). ANOVA and $chi$$^2$ analyses revealed significant differences among the four groups on store visit behaviors(the extent of store visits and the extent of service facility visits), clothing purchase behaviors(6 store choice criteria and the extent of clothing purchase), and 5 demographic characteristics. The study developed a profile of each segment and provided marketing implications.