The authors analyze and systematize multi-temporal cartographic material, as well as information on the history of Buinsk city territory development in determining the historic boundaries of settlements. For this, information is presented on the formation of the uezd town of Buinsk on the basis of Buinskoye village in the Simbirsk gubernia in the 18th century and the transformation of its borders during the 19th century. The authors present an overview of historical cartographic sources, the results of analyzing scientific historical and cultural (historical and architectural, historical and urban planning, historical and archival, archaeological) materials, information obtained arising from viewing the ancient buildings of the historical settlement, containing information on the city of Buinsk. Cartographic overlay and spatial referencing of historical and modern materials were carried out, taking into account the location of cultural heritage objects included in the unified state register (historical and cultural monuments) of the Russian Federation’s peoples, identified cultural heritage features and historically valuable cityforming ones. In addition, the results of analyzing compositional-and-species relationships of the historic settlement were taken into account. In this article, for the first time, cartographic sources on the history of Buinsk city are collected and summarized. Our studies served as the basis for defining the boundaries of the regional significance historical settlement territory, as well as identifying the elements of the regional significance historic settlement subject protection – “City of Buinsk”. As a result, the objects of cultural heritage and the subject of protection of the historical settlement were identified; the requirements for the regimes of maintaining the territory and town planning regulations were determined for them.