The Evolution of Public Health Geography

Public health and geography are deeply intertwined as health and well-being outcomes are shaped by spatial processes involving place, mobility, and the environment. This article traces the evolution of health geography as a disciplinary subfield, rooted in environmental theories, and its development into modern spatial epidemiology and relational frameworks. Key historical developments, such as John Snow’s cholera mapping and the public sanitation movement, underscore geography’s contributions in visualizing and addressing health disparities. The quantitative revolution transformed medical geography into a statistical science, enabling the accounting of spatial dependence, clustering, and scale, with subsequent developments recasting neighborhoods and activity spaces as dynamic determinants of health. The historical trajectory reveals a recurring cycle of divergence and convergence as epidemiology and public health repeatedly rediscover geography’s conceptual and methodological insights. By tracing the lineage of public health in relation to health geography, we highlight a persistent gap in the development of geographic theory and its sustained integration into public health. We emphasize that geography remains indispensable for conceptualizing and addressing population health. The article concludes that geographic theoretical and methodological contributions should be more consistently recognized and articulated, rather than continuing the cycle of being periodically overlooked and then rediscovered.