The structure of environmental concern in the United States is examined in this article. Confirmatory factor analysis and structural equation modeling are used to test the environmental concern model developed by Stern, P., C. Dietz, T. & Kalof, L. (1993) which indicates that environmental concern consists of three correlated value orientations including (1) social-altruistic value; (2) biospheric value; and (3) egoism or self-interest orientation. Data are derived from the International Social Survey Program of Inter-University Consortium for Political and Social Research (ICPSR, 6640). Findings confirm the goodness of fit of Stern and associates environmental concern model. Details will be discussed in the article.