Data physicalization is a growing research field that focuses on data representation and communication through the geometry or materials of physical objects. As part of this paper, we aim to contribute to the design-centric physicalization research by presenting a systematic literature review on the topic. We have identified and included in the review 163 published and peer-reviewed conference papers and journal articles with primary data on physicalization artifacts. We have analyzed the sources from the point of view of conceptual and practical design elements. The results provide an insight into the state-of-the art research on design elements in data physicalization. This review is especially relevant for design and art researchers interested in the field of physicalizations.