Port Jefferson (informally known as Port Jeff) is an incorporated village in the Town of Brookhaven in Suffolk County, New York on the North Shore of Long Island. Officially known as the Incorporated Village of Port Jefferson, the population was 7,750 as of the 2010 United States Census.
The village of Port Jefferson is located on the North Shore of Long Island, 60 miles east of New York City.
The village’s commerce is divided into two centers that lie one mile apart along Main Street and at differing elevations. These are known as Lower Port Jefferson and Upper Port Jefferson, respectively the waterfront and the railroad station sections of town. The first is currently the center of tourism, while the latter is undergoing plans for revitalization to the economic viability of its historic self. Further from Main Street, the remainder of Port Jefferson consists of several residential neighborhoods defined by the hills on which they sit. In the northeastern corner of the village is the neighborhood of Harbor Hills. This neighborhood occupies the western edge of Mount Sinai Harbor and contains the Port Jefferson Country Club at Harbor Hills. Brick Hill is the neighborhood directly west of the Lower Port Jefferson commercial center and was first developed by the noted circus owner P. T. Barnum. West of Upper Port Jefferson is Cedar Hill, which is topped by the c. 1859 Cedar Hill Cemetery where residents formerly would bask while enjoying views over the village from its highest point.
Within Port Jefferson is Port Jefferson Harbor, a natural deepwater harbor. Setauket Harbor branches off to the west from the harbor. One notable geographic feature is The Cove, a small cove dredged in the early 20th century by the Seaboard Dredging Company. The original name was Seaboard Hole, but it was changed for the sake of appealing to tourists, and several large sand dunes artificially created by the dredging can also be found here.
As of the 2010 United States Census, there were 7,750 people, 3,090 households, and 1,975 families residing in the village. The population density was approximately 2,500 people per square mile (980/km). The racial makeup of the village was 88.5% White, 1.6% African American, 0.2% Native American, 6.1% Asian, 2.2% from other races, and 1.4% from two or more races. Hispanic or Latino of any race were 6.5% of the population.
There were 3,090 households out of which 27.8% had children under the age of 18 living with them, 52.2% were married couples living together, 8.0% had a female householder with no husband present, 3.8% had a male household with no wife present, and 36.1% were non-families. 28.3% of all households were made up of individuals living alone and 9.0% consisted of people living alone who were 65 years of age or older. The average household size was 2.40 and the average family size was 2.96.
In the village, the population was spread out with 20.7% under the age of 18, 6.9% from 18 to 24, 24.2% from 25 to 44, 31.2% from 45 to 64, and 16.8% who were 65 years of age or older. The median age was 43.6 years. For every 100 females, there were 97.6 males. For every 100 females age 18 and over, there were 95.1 males.
In the 2008–2012 American Community Survey, the median income for a household in the village was $108,060 and the median income for a family was $138,984. The per capita income for the village was $51,937. 6.5% of the population were below the poverty line.