Sussex is a borough in Sussex County, located in northwestern New Jersey near the New York and Pennsylvania borders. The borough has established residential neighborhoods, local civic uses, and commercial areas that serve residents and nearby communities. Outdoor recreation, agriculture, historic villages, lake communities, local institutions, and residential development all contribute to the county’s distinctive rural character. Sussex County is defined by the Kittatinny Mountains, Highlands, lakes, forests, farms, and small boroughs set within a generally lower-density landscape. Routes 23, 94, and 206 provide the principal connections between local communities and larger employment and commercial centers to the south and east. Its location within Sussex County keeps Sussex connected to nearby employment centers, schools, shopping, public services, and transportation. Sussex reflects Sussex County’s broader mix of established neighborhoods, local development, preserved land, and regional transportation links.