Hardyston Township lies in central Sussex County around Franklin and Hamburg, extending into the wooded hills of the New Jersey Highlands. The township includes residential communities, golf and resort properties, open land, former mining areas, and commercial development along Route 23. Routes 23 and 94 connect Hardyston with Vernon, Sparta, Franklin, Butler, and the New York State line. Sussex County occupies the northwestern corner of New Jersey and is defined by the Kittatinny Mountains, Highlands, lakes, farms, forests, and small boroughs. Its communities are generally lower in density than those farther east, while Routes 23, 94, and 206 provide access to regional centers and neighboring states. Together, the setting and local development patterns give Hardyston Township a recognizable place within Sussex County. Neighborhoods, local institutions, business areas, open land, and road connections together shape the township’s physical layout.