Local governments in the United States have adopted and implemented e-government as a means of delivering services to the public and encouraging citizen participation. We use data from a national random survey of 902 government managers from 500 local governments in the United States to examine factors that explain the adoption of two types of e-government technologies: e-services, which enable electronic delivery of services, and communication technologies, which enable one- and two-way communication with citizens. We find that managerial perceptions of the organization, such as personnel constraints and organizational centralization, are negatively related to the adoption of e-services while citizen demands are positively associated with the adoption of e-services. In comparison, we find that public managers perceiving higher levels of external influences and citizen demands report increased adoption of communication technologies. The results contribute to the e-government literature by indicating the importance of distinguishing between communication technologies and e-services and the factors that explain the adoption of these technologies.