Technologies are described for generating geographically-driven group communications involve maintaining location information for multiple user devices, data defining geographic regions, and rules that identify a geographical region to which the rules applies and a communication and payload to be sent. When an update in the location information, geographical regions or rules is detected, an evaluation is performed to determine whether a user client device is located in the geographical region identified for the rule. If so, the communication and payload defined in the rule are sent to the user client devices for a group of users located in the geographical region for the rule. In some examples, the rule defines a group characteristic condition and the communication and payload are sent to the user client devices for users that satisfy the group characteristic condition.