In the past few decades, due to urbanization and spatial expansion of cities beyond their municipal boundaries, complex interactions between the city and its surrounding rural areas have occurred, resulting in the formation of peri-urban spaces or zones of transition. There is a plurality of definitions for these peri-urban spaces, due to their diverse character in terms of land and water use, livelihood shifts, demographic and social transitions. Most peri-urban areas, specifically those around large metropolitan cities, are increasingly assuming complex characters, which call for governance structures beyond rural–urban binaries. For any administrative intervention of a serious nature in peri-urban areas, a standard methodology for demarcation of these spaces is required. This article is an attempt to develop and apply such a methodology beyond the existing ones, using government sources of data, in the case of Kolkata Metropolis. This article uses socio-economic and land-use characteristics to achieve this objective. It finds that peri-urban spaces do not necessarily develop uniformly around the city; instead, they are fragmented and could be located both near or relatively far from urban areas.