Manhattan is the oldest and the most densely populated of the five boroughs of New York City.

New York County is the most densely populated county in the United States, and one of the most densely populated in the world. It is also one of the wealthiest counties in the United States, with a 2005 personal income per capita above $100,000. Manhattan is the third-largest of New York's five boroughs in population behind Brooklyn and Queens.

Manhattan is a major commercial, financial, and cultural center of the United States and the world. Its financial heartbeat is on Wall Street. Manhattan has many famous landmarks, tourist attractions, museums, and universities. It is also home to the headquarters of the United Nations. The metropolitan area's employment, business, and entertainment activities are largely here. For this reason many residents of Brooklyn, Queens and the other boroughs often refer to a trip to Manhattan as going to the city

New York City has the lowest crime rate among the ten largest cities in the United States. Since 1990, crime in Manhattan has plummeted in all categories. Including, an 88% drop in murders from 503 murders in 1990 to 62 in 2008. Robbery and burglary are down by more than 80% in the same period, and auto theft was reduced by more than 93%. In the seven major crime categories, overall crime has declined by more than 75% since 1990.