Sussex County, New Jersey

Sussex County
County
Looking east from the ridge of Kittatinny Mountain in Walpack Township
Location within the U.S. state of New Jersey
New Jersey's location within the U.S.
Coordinates: 41°08′N 74°41′W / 41.14°N 74.69°W / 41.14; -74.69
Country	United States
State	New Jersey
Founded	June 8, 1753[1]
Named for	Sussex, England[2][3]
Seat	Newton[4]
Largest municipality	Vernon Township (population and area)
Area [5]
• Total	535.54 sq mi (1,387.0 km2)
• Land	518.66 sq mi (1,343.3 km2)
• Water	16.88 sq mi (43.7 km2)  3.2%
Population  (2020)[6]
• Total	144,221
• Density	278.1/sq mi (107.4/km2)
Congressional districts	5th, 7th
Website	www.sussex.nj.us

Sussex County is the northernmost county in the State of New Jersey. Its county seat is Newton.^[4]

1. ↑ Snyder, John P. The Story of New Jersey's Civil Boundaries: 1606–1968, Bureau of Geology and Topography; Trenton, New Jersey; 1969. p. 229. Accessed May 31, 2012.
2. ↑ Hutchinson, Viola L. The Origin of New Jersey Place Names, New Jersey Public Library Commission, May 1945. Accessed October 11, 2015.
3. ↑ Gannett, Henry. The Origin of Certain Place Names in the United States, p. 294. United States Government Printing Office, 1905. Accessed October 11, 2015.
4. ↑ ^{4.0 4.1} New Jersey County Map, New Jersey Department of State. Accessed July 10, 2017.
5. ↑ "2020 U.S. Gazetteer Files". United States Census Bureau. Retrieved January 14, 2024.
6. ↑ "QuickFacts: Sussex County, New Jersey". United States Census Bureau. Retrieved January 14, 2024.