Port Jefferson Real EstatePort Jefferson is located in New York. Port Jefferson, New York has a population of 7,951. Port Jefferson is less family-centric than the surrounding county with 27.87% of the households containing married families with children. The county average for households married with children is 32.94%. The median household income in Port Jefferson, New York is $121,270. The median household income for the surrounding county is $111,660 compared to the national median of $69,021. The median age of people living in Port Jefferson is 45.6 years. Port Jefferson WeatherThe average high temperature in July is 82.1 degrees, with an average low temperature in January of 23.2 degrees. The average rainfall is approximately 47.2 inches per year, with 27.2 inches of snow per year. Port Jefferson MapReal estate near Port JeffersonNearby CitiesNearby Cities Homes for Sale |