Now a decade old, Rimini Protokoll's 100% City continues to stage civilians as statistical samples. Considering the project as a series, this paper proposes that ‘seriality’ governs not just the project's touring model, but also its creation of individuals, populations and a homogeneous group of ‘diverse’ metropolises. These serializations are a foundational part of the project of statistical reason. Surveying the nineteenth-century origins of these practices and their early public articulations, and contrasting these practices with the newly emerging regime of ‘big data’, this paper argues that this serial logic is in fact a nostalgic one. 100% City’s celebration of statistics, however troubling, appears as a comforting articulation of a social model now dissolving in favour of algorithmic enumerations of peoples. The statistical project has long been tied to the theatre, while data analysis may articulate a limit to theatrical representation.