Geography is central to the work of the Census Bureau, providing the framework for survey design, sample selection, data collection, tabulation, and dissemination. This webinar explains how the popular geographic areas, such as block groups, census tracts, and ZIP Code Tabulation Areas (ZCTAs) are used to present American Community Survey (ACS) data. Additional discussion will include how the Census Bureau updates geographic boundaries, how geographies relate to each other, how you can use TIGERWeb to view boundaries, and how to relate data to a specific address.