Port Jefferson Real EstatePort Jefferson is located in New York. Port Jefferson, New York has a population of 8,940. Port Jefferson is more family-centric than the surrounding county with 36.1% of the households containing married families with children. The county average for households married with children is 35.14%. The median household income in Port Jefferson, New York is $106,840. The median household income for the surrounding county is $92,838 compared to the national median of $57,652. The median age of people living in Port Jefferson is 45.9 years. Port Jefferson WeatherThe average high temperature in July is 84.4 degrees, with an average low temperature in January of 24 degrees. The average rainfall is approximately 46.7 inches per year, with 24.8 inches of snow per year. Port Jefferson MapReal estate near Port JeffersonNearby CitiesNearby Cities Homes for Sale |