This paper characterizes and reviews multidisciplinary approaches to urban form. It begins by classifying quantitative approaches to analyzing urban form into five classes: landscape ecology, economic structure, surface transportation, community design, and urban design. It then reviews quantitative measures in each class. Based on the review, four conclusions are drawn. First, over the last two decades substantial progress has been made in the ability to measure and analyze spatial patterns that help characterize urban form. Second, at multiples scales and for a variety of reasons, there are advantages to development that is mixed and compact. Third, normative principles and policies for addressing urban form need to be crafted at multiple scales and carefully designed to address the disparate issues that arise at each scale. Fourth, with so many disparate measures now used to operationalize the same constructs, it would advance urban form research to have some standardization in operational definitions and measurement protocols.