American Community Survey data are released each year, enabling data users to monitor annual social and economic trends for states and local areas. The availability of annual data is a boon to decisionmakers who need to plan and budget for services such as transportation, medical care, and schools. However, assessing trends over time can be challenging when working with ACS multiyear estimates. In this webinar, Ken Hodges, chief demographer at Nielsen, and Ed Christopher, community planner for the Federal Highway Administration Resource Center, will discuss some applications of ACS data to measure trends over time. Mark Mather of the Population Reference Bureau will also provide a brief overview of the Census Bureau’s guidance for measuring trends with ACS data. Their discussion will be followed by 10-15 minutes of Q & A. An archived recording of this webinar is available online.