American grassroots governments have rushed to join the e-government revolution. Although there is a growing body of e-government literature, little of it is empirical. Using data from two nationwide surveys, we conduct a longitudinal examination of local government adoption of e-government, Web site sophistication, the perceived impacts of e-government, and barriers to the adoption and sophistication of e-government. We also discuss correlates of e-government adoption and sophistication with selected institutional factors. We find that e-government adoption at the grassroots is progressing rapidly (if measured solely by deployment of Web sites). However, the movement toward integrated and transactional e-government is progressing much more slowly. Continuing research, particularly longitudinal study, is needed to monitor the evolution of e-government among U.S. local governments, especially to keep pace with the practice and to ascertain the actual impacts of e-government.