During the past five years, community approaches to homelessness have changed and thousands of people are working toward the shared goal of ending homelessness. Measuring their success or failure will depend on collecting and analyzing outcome data, monitoring changes in homelessness populations, and understanding which interventions lead to different outcomes. Yet, up until now, we had no recent data on how many people are homeless in the United States. The data in this report represent the first effort to count homeless people nationwide in 10 years. We hope to make this report an annual report, tracking progress on the efforts to end homelessness nationwide. It is our belief that what gets measured, gets done. (Authors)