Datasets underpinning the four figures for "High quality hydrogen silsesquioxane encapsulated graphene devices with edge contacts" in Materials Letters. The primary data files are transmission line measurements for edge contacts and Hall mobilities of devices with and without hydrogen silsesquioxane (HSQ) encapsulation. Also included are a device processing chart and atomic force microscopy (AFM) profiles. Raman data presented in the Supporting Information are also included.