University Indian Ruin is a Classic Period Hohokam platform mound village located in the eastern Tucson Basin. Although portions of the site are well understand, the spatial and social community of the village has not been thoroughly documented. This report seeks to define the community of UIR through archival research, public outreach, and spatial analysis using geographic information systems. The result is a conception of a dynamic community with considerable time depth, which was reliant on certain environmental features, and one that also conforms to the phenomenon of pan-Southwestern abandonment and aggregation in late prehistory.