The data-centric assessment focuses on identifying and mapping physical and social vulnerability, employment centers, and environmental hazards. It takes a participatory approach to assessment, offering opportunities and tools to engage community partners if resources permit. The guide helpfully identifies data sources an agency can use to identify and map at-risk populations and expected/ideal output and goals for each data source. Numerous communities on the eastern seaboard participated in a demonstration project to identify barriers and strategies related to preparedness and recovery in vulnerable populations. The guide was developed as a result of lessons learned from these demonstrations. This tool was identified through NACCHOs Resource Portfolio Project on the CDC Public Health Preparedness Capabilities. Through this project, NACCHO worked with the Center for Infectious Disease Research and Policy (CIDRAP) to identify, research, and validate tools, practices, and products that can assist LHDs to address challenges in meeting select PHEP capabilities.