Usage data representing resource accesses on a network by client devices in a plurality of households is accessed. Based on the accessed usage data, a set of the households that the usage data indicates are associated with a specified number and type of client devices is determined. A subset of the usage data is extracted, where the subset corresponds to resource accesses by client devices associated with the subset of households. Usage information is determined for the specified number and type of client devices based on the extracted subset of the usage data.