This study explores Customer Relationship Management (CRM) in government. Based on an interdisciplinary literature review and multiple-case study design, a model of Citizen Relationship Management (CiRM) is developed and discussed. The case studies explore the perceptions of CRM/CiRM by administrators, elected officials and consultants as well as its implementation and impact on the municipal level and in a multijurisdictional environment in the United States. Although the explorative part of the study focuses broadly on a theoretical conceptualization of CiRM, the immediate empirical referent of research are the 311 initiatives in the City of Baltimore, the City of Chicago, the City of New York and Miami-Dade County.