The Census Bureau recently released the 2014 Planning Database (PDB) with selected 2008-2012 American Community Survey (ACS) and 2010 Census data for census tracts and block groups. These small area demographic, housing, and socioeconomic data may be useful to a wide range of ACS data users for planning and analysis. The PDB includes the 2010 Census mail return rate and a new “Low Response Score” (LRS) for each tract and block group, which measures the likelihood of census or survey participation. In this webinar, Nancy A. Bates, Travis Pape, Barbara C. O’Hare, and Chandra Erdman of the U.S. Census Bureau first provide an overview of the 2014 Planning Database, describe how to access it, and then discuss practical applications of the new LRS. Their presentation is followed by 10-15 minutes of questions and answers. An archived recording of this webinar is available online.