Marie Urban leads the Human Geography Group within the Geospatial Science and Human Security Division at Oak Ridge National Laboratory and has nearly two decades of experience advancing high-resolution population modeling in direct support of U.S. government and national security missions. Throughout her career, she has played a central role in the development, sustainment, and evolution of the LandScan program, leading efforts in data integration, spatial analysis, and remote sensing to deliver authoritative, globally consistent population datasets at national and planetary scales. She has also led the development of rapid, event-driven population updates that capture dynamic shifts associated with geopolitical instability, conflict, extreme weather, and humanitarian crises, as well as a global probabilistic building-occupancy learning system that underpins LandScan’s high-resolution, bottom-up modeling framework. Under her leadership, ORNL has established a strong track record of successful support to federal agencies through the development of trusted operational capabilities, secure data systems, and user-facing delivery portals that provide foundational datasets directly to mission partners, enabling DHS and interagency stakeholders to leverage rigorous, time-variant population intelligence for risk assessment, disaster response, migration analysis, infrastructure resilience, and consequence management.