Michael Ratcliffe is Assistant Division Chief for Geographic Standards, Criteria, Research, and Quality in the Census Bureau’s Geography Division, where he is responsible for geographic area concepts and criteria, address and geospatial data quality, and research activities. During his tenure at the Census Bureau, he has worked in both the Geography and Population Divisions, on a variety of geographic area programs, including urban and rural areas, metropolitan and micropolitan statistical areas, and other statistical geographic areas, and has led staff engaged in product development and dissemination. Mr. Ratcliffe holds degrees in geography from the University of Oxford and the University of Maryland.