is a city in the U.S. state of North Carolina. It is the
county seat of Durham County, though portions also extend into Wake County in
the east and Orange County in the west. It is the fourth-largest city in the
state, and the 85th-largest in the United States by population, with 233,252
residents as of the 2011 United States census. It is the home of Duke
University and North Carolina Central University, and is also one of the
vertices of the Research Triangle area (home of the Research Triangle Park).
Durham is the core of the four-county