In the 2010 United States Census, the population of Port Jefferson was 7750. The population density per square mile was 2,513.4. That number is higher than the national average. The population of Port Jefferson City is also very diverse. The most common racial groups are White, Asian, and Hispanic. The following statistics show how much income the different groups make in Port Jefferson City. The following table provides a breakdown of these groups and their income levels.
The main street of the village is New York State Route 25A. This highway stretches from the borough of Queens eastward to the town of Calverton. Port Jefferson is also served by New York State Route 347, a multilane divided highway that connects to the Northern State Parkway near Hauppauge. The town also boasts a large residential area called Harbor Hills, which occupies the western edge of Mount Sinai Harbor.
The city has a unique history, which ties it to its seaside heritage. It organizes a traditional Fourth of July parade and holds an annual outdoor concert series. During the summer, the city hosts the Village Cup Regatta, a series of boat races in which locals compete in the event. Its residents take pride in the fact that two of their sons have won the America's Cup.
While the population of Port Jefferson is largely white, there is a high proportion of middle-aged adults and people in their early forties. The town has a slightly higher percentage of singles compared to other communities. While the population of Port Jefferson is relatively small, the area is still home to a number of correctional and nursing facilities. In addition, the population of the town is slightly higher than the national average.