Over the years, there has been increasing concern about fire prevention in historic urban areas. This is because these areas hold significant cultural, urban, architectural, and social value, but their intrinsic characteristics could contribute to fire ignition and propagation, posing challenges for fire control. Valparaíso, a UNESCO World Heritage Site, features a historic area situated between the bay and a series of hills, forming a unique configuration of buildings, stairways, roads, and lifts. The characteristics of these areas, including the high fire load of their materials and the dense concentration of buildings, coupled with their location on sloping terrain highly exposed to winds, render them exceptionally vulnerable to fire incidents. Moreover, the narrow layout of streets in the urban fabric adds further complexity to fire-fighting efforts and the evacuation of affected individuals. This paper introduces an integrated approach to assess fire risk in historic urban centres, considering both physical and social aspects. It presents two index-based methodologies and analyses CENSUS data at the block level, which is a rarity in existing literature. The results of both indices are consolidated in a matrix, allowing for the classification of blocks into five priority levels. A Geographic Information System (GIS) tool is then employed to map these results.