This study was designed to examine the structure of vocational interests in a diverse sample of individuals who completed the 2005 revision of the Strong Interest Inventory. We examined the fit of three racial/ethnic groups (African American, Caucasian, and Latino/a), both genders, and three levels of professional status (GRS participant, student, and working adult; N=136, 219) with a less-stringent circular RIASEC ordering as well as a more stringent, equidistant RIASEC ordering. Results from circular unidimensional scaling analyses revealed a circular RIASEC order for all the samples with the exception of African American females in the General Representative Sample and Latinos in the adult sample. Additionally, results indicated gender differences in the adult and student samples suggesting a better fit with Holland's model for males than females. (Contains 1 table and 3 figures.)