This study examines the determinants of Major League Soccer team attendance during the league’s recent era of growth. The estimates indicated that regular-season on-field performance is positively associated with attendance, but the returns to success are diminishing. The estimates identified positive novelty effects for newer teams and soccer-specific stadiums, but not for stadium age. Income and attendance were positively correlated, which indicates that Major League Soccer matches are a normal good. The population size, Hispanic share of the population, presence of other major-league franchises, and number of designated players on a team did not appear to be strong determinants of seasonal attendance.