The document summarizes a presentation given by Jason Reece of the Kirwan Institute for the Study of Race & Ethnicity on opportunity mapping. Opportunity mapping analyzes data on education, economic, housing, and other indicators to create maps showing levels of opportunity across neighborhoods. The Kirwan Institute has conducted such mapping in many states to promote social justice. Reece described early opportunity mapping projects in King County, WA, Baltimore, MD, and Austin, TX that were used for advocacy around fair housing, affordable housing, and improving access to opportunity.