Rendering the capital legible: census, space, and identity in modern Tehran (1852–1922)

This study investigates the historical genealogy of the census institution in Tehran during the transitional period from the Qajar to the Pahlavi era (1852–1922). The central inquiry aims to elucidate the Iranian bureaucracy’s shift from the pre-modern tradition of estimation and Istifa to Istifa to more systematic quantitative methods, examining its subsequent impact on the legibility of urban society. Employing a descriptive-analytical method and a comparative analysis of six pivotal censuses—ranging from the 1852 enumeration of edifices to the 1922 comprehensive municipal census—this research reconstructs the capital’s spatial and demographic transformations. The findings indicate that Tehran experienced a phenomenon of asymmetrical development over this seventy-year period; specifically, a 100% expansion in the city’s physical fabric juxtaposed against a modest 25% population growth resulted in a significant decline in residential density and an improvement in per capita living space. Furthermore, data analysis reveals an epistemological rupture during the mid-Nasiri era, wherein the state’s perception of its subjects transitioned from mere taxable resources to distinct statistical units. Concurrent with infill development inside the Nasiri Wall, Tehran’s population shifted from a migrant majority (74% in 1868) to locally born Tehranis (61% in 1922), alongside emerging centralized urban administration.