Stanhope sits at the southeastern edge of Sussex County near Lake Musconetcong, the Musconetcong River, and the Morris County border. The borough combines a compact historic center with residential streets, small businesses, and nearby lakefront areas. Routes 183 and 206, together with nearby Interstate 80, link Stanhope with Netcong, Mount Olive, Newton, and points farther east. 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. Local land use and regional connections continue to shape the way Stanhope grows and functions. Residential streets, civic uses, local businesses, and road connections together shape the community’s physical layout.