The purpose of this study was to examine the effects of community service participation on undergraduates' social capital development, including whether any potential effects are conditional on students' race/ethnicity, parents' or guardians' education, and social class. I used a propensity score analysis on a multi-institutional sample of students enrolled at 69 colleges and universities in spring 2021 to construct matched pairs of students who did and did not participate in community service (n = 8,964). The results of ordinary least squares regressions suggest that community service has significant and positive effects on students' social capital development; however, while the results were uniform for students based upon their parents' or guardians' education and social class, the results were not uniform based upon students' race/ethnicity.