Northport Business directory. Northport Long Island, NY provides advertising, web site promotion, and banner advertising for affordable prices. Northport Businesses located in Northport. Providing affordable business advertising for the following areas: Administration Business,Center Port Business,Centerport Business,Commack Business,E Northport Business,East Northport Business,Elwood Business,Greenlawn Business,Kings Park Business,San Remo Business,Asharoken Business,Crab Meadow Business,Eatons Neck Business,Fort Salonga Business,Northport Business,Sunken Meadow Business,Long Island