The expectancy disconfirmation model has dominated private-sector research on customer satisfaction for several decades, yet it has not been applied to citizen satisfaction with urban services. The model views satisfaction judgments as determined--not just by product or service performance--but by a process in which consumers compare performance with their prior expectations. Using data from a New York City citizen survey, this study finds that citizen expectations, and especially the disconfirmation of expectations--factors that previously have not been considered in empirical studies of the determinants of citizen satisfaction--play a fundamental role in the formation of satisfaction judgments regarding the quality of urban services. Interestingly, the modeling results suggest that urban managers should seek to promote not only high-quality services, but also high expectations among citizens. Additional implications for research and public management practice are discussed.