A system receives a description of a first set of elements representing physical and/or logical entities in a geographic area to be displayed on a digital map. The system determines current boundaries of a viewport within which the digital map is to be displayed and generates a metric indicative of how frequently the elements in the first set occur within the current boundaries of the viewport relative to at least a second set of elements displayed on the digital map. The system determines one or more visual attributes for the first set of elements based at least in part on the generated metric and displays representations of the first set of elements on the digital map in accordance with the determined one or more visual attributes.