Sussex County, New Jersey

Sussex County
Looking east from the ridge of Kittatinny Mountain in Walpack Township
Looking east from the ridge of Kittatinny Mountain in Walpack Township
Map of New Jersey highlighting Sussex County
Location within the U.S. state of New Jersey
Map of the United States highlighting 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
FoundedJune 8, 1753[1]
Named forSussex, England[2][3]
SeatNewton[4]
Largest municipalityVernon Township (population and area)
Area
 • Total535.54 sq mi (1,387.0 km2)
 • Land518.66 sq mi (1,343.3 km2)
 • Water16.88 sq mi (43.7 km2)  3.2%
Population
 • Total144,221
 • Density278.1/sq mi (107.4/km2)
Congressional districts5th, 7th
Websitewww.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.

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