This book explores how maps generated through Geographic Information Systems (GIS) can be used to integrate principles of health equity and environmental justice into community planning and decision-making. To do this, the book puts forward the 3Ps of GIS mapping: People, Place, and Policy. This book demonstrates how different maps reveal different spatial disparities for each topic, providing alternative lens for addressing socio-cultural, political, or geographical issues. Using a step-by-step approach, and covering the core concepts by which GIS maps can be interpreted, it builds to provide a comprehensive understanding of what a GIS-generated map may tell us, though crucially also what it may not. Featuring illustrated examples throughout, this book is essentially a tool kit to support a nuanced and holistic perspective on community planning. It will appeal to policymakers, planners, and public health consultants, as well as students moving toward this field.