Morris County is located in the U.S. state of New Jersey, west of New York City. It is part of the New Jersey Metropolitan Area. Its county seat is Morristown. Morris County ranks 3rd among the highest-income counties in the United States by median household income, and 10th by per capita income.Morris County has a total area of approximately 481 square miles of which 97% is land and 3% water. As of the 2000 census, there were 470,212 people, 169,711 households, and 124,907 families residing in Morris County, NJ.