Understanding where middle-aged and older adults live, where they are moving, how they get around, and the factors influencing these decisions is essential for planning for the future. To gain an understanding of the impact of age-related shifts on housing and transportation demand, Portland State University's College of Urban and Public Affairs, via its Institute on Aging, was contracted to conduct a review of the literature and to analyze existing key local and national data sources. A multidisciplinary team of faculty and graduate students was assembled and performed the work in the summer of 2006. The literature reviewed and the analyses presented here are intended to inform Metro's Regional Forecast and modeling assumptions and to stimulate policy discussions pertaining to managing the region's land supply and investing in transportation infrastructure.