The document summarizes key points from an OECD survey on circular economies in cities and regions. It finds that while most cities and regions have emerging or in-progress circular economy initiatives, fully adopting circular economies requires a holistic and systemic approach across all sectors of cities. Common tools used by cities include pilots and experimentations, capacity building, sustainable public procurement, and dedicated budgets. Top priorities for cities include overcoming obstacles to transitioning and further developing circular economy plans and policies over the long term through the OECD's circular economy program.