Agile approaches are increasingly being used in the public sector. What is driving the adoption of agile ways of working, however, remains unclear. In this paper we ask the following two questions: Which agile approaches are being used in public sector organizations? Under which circumstances do public sector organizations use which agile practices? To analyze these questions, we conducted a standardized survey among over 450 civil servants in Austria, Germany, and Switzerland. Results from the logistic regression analyses indicate that various forms of agile practices are used in the public sector in all three countries. PSOs operating in constantly changing, uncertain environments are more likely to adopt agile. Political and managerial leadership is vital if the aim is to become more agile as a government. Finally, the results show that tasks that require constant internal and external stakeholder involvement and those that require radically new ideas and ways of working lead PSOs to introduce more comprehensive forms of agile working. This work advances the state of literature by providing the first quantitative analysis of the state of agile in the three countries, developing an analytical framework and measurement of agile government, and analyzing the external circumstances under which agile is being used in the public sector.