This research talk presents a multi-component index of access that measures accessibility of culture as a community resource to the diverse populations in urban areas. Relying upon the sample of 335 public and nonprofit cultural organizations located in Metropolitan Detroit, it uses a GIS-modelling approach to develop an index of public access to the cultural sector and its five sub-fields. U.S. Census Bureau data is further used to analyze how accessible cultural institutions are to traditionally underserved populations. The analysis reveals that cultural institutions are unevenly distributed in the geographic area, and that certain groups of the population have relatively low access to particular cultural amenities. The presentation discusses implications of the findings to cultural managers, donors, and policymakers, and suggests future research directions.