Megan's Law refers to a collection of federal and state statutes requiring law enforcement agencies to maintain registries of convicted sex offenders and make that information publicly accessible. From a GIS perspective, Megan's Law represents a critical public safety use case where geospatial data, spatial analysis, and interactive mapping converge to deliver actionable community awareness tools. GIS technology enables agencies to geocode offender residential addresses, visualize precise locations within a spatial framework, and publish web-based mapping applications that allow residents to query offender proximity to schools, parks, daycare centers, and other sensitive locations. Spatial analysis techniques — including buffer analysis, proximity queries, and heat mapping — support both compliance monitoring and law enforcement patrol optimization. Geospatial datasets are continuously maintained and updated, ensuring data integrity across dynamic population environments. Jurisdictional boundary layers, parcel data, and address locators are commonly integrated into these platforms to enhance accuracy. The practical benefits include improved public transparency, streamlined compliance reporting, and data-driven decision-making for community safety planning, making Megan's Law one of the most socially significant applications of modern GIS technology.