The County of Sussex is the northernmost county in the State of New Jersey. The county was founded on 8 June 1753, by an order of Jonathan Belcher (1689-1757), Royal Governor of New Jersey (1747-1757) and his council, from portions of Morris County. It originally contained all the land north and west of the Musconetcong River, including the area of the present-day Warren County. At present, it is the fourth largest county in New Jersey by area. The county seat of Sussex County is the Town of Newton.

As of the 2000 Federal decennial census, 144,166 persons resided in Sussex County.

According to the U.S. Census Bureau, the county has a total area of 536 square miles, of which, 521 square miles of it is land and 15 square miles of it (2.75%) is water. High Point in this county is also the highest elevation in the state at 1,803 feet above sea level. The county's lowest elevation is approximately 300 feet above sea level along the Delaware River near Flatbrookville.

Much of the county is hilly, as the part of New Jersey most solidly within the Appalachian Mountains. However, the Great Valley of the Appalachians takes in a good deal of the eastern half of the county, allowing for land more amenable to agriculture.

Sussex County is a predominantly Republican area, as among registered voters, affiliations with the Republican Party outpace those of the Democratic Party by a ratio of three to one. All five members of the county board of Chosen Freeholders, all three county-wide constitutional officers, and all except a few of the 108 municipal offices among the county's 24 municipalities are held by Republicans.

Sussex County Community College is a two-year community college located at the intersection of County Route 519 and Plotts Road in Newton. Sussex County Technical School is a county-wide technical high school in Sparta Township, New Jersey. It is the home of the McNeice Auditorium and the Fighting Mustangs.

Sussex County is served by a number of roads connecting it to the rest of the state and to both Pennsylvania and New York. Interstate 80 passes through the extreme southern tip of Sussex County. Interstate 84 passes just yards north of Sussex County, but never enters New Jersey. New Jersey's Route 15, Route 23,Route 94, Route 181, Route 183, and Route 284 pass through the County, as does U.S. Route 206.

Commuter Rail available from Netcong, New Jersey on the Morris & Essex Lines of New Jersey Transit. New Jersey Transit also aims to open up the Lackawanna Cutoff, which passes through Andover and Green Townships to commuter traffic, connecting Scranton, Pennsylvania with Hoboken, New Jersey and New York City.

Sussex County has four public-use airports, all privately owned and catering to recreational pilots. They are Sussex Airport, in Wantage Township, which has a runway of 3,499 feet, Newton Airport in Andover Township, Andover Aeroflex Airport also in Andover Township, and Trinca Airport in Green Township, which has a 1,900-foot grass runway.

What is MLS Guide? MLSGuide.com is a real estate search engine created by Realty Multiple Listing System of New Jersey. It helps you find homes and commercial properties for sale and rent. How? By bringing you up to the minute listings of properties in New Jersey. You can refine your home search in Sussex County, NJ by price, number of bedrooms, bathrooms, and property type (including rentals, condo, condominiums, a single family home, a two family home, a three family home, a four family home, multi family buildings, industrial, retail, commercial, investment properties and vacant land). View our Sussex County School Information page to see information for local school districts. Get in contact with Sussex County real estate agent, Sussex County REALTOR and Sussex County real estate brokers. Find your home in New Jersey today!