Chapel Hill is a town in Orange County, North Carolina (with some eastern portions in Durham County), and the home of the University of North Carolina at Chapel Hill and UNC Health Care. The population was 57,233 at the 2010 census;[4] Chapel Hill is the 15th-largest municipality in North Carolina. Chapel Hill, Durham, and Raleigh make up the three corners of the Research Triangle, so named in 1959 with the creation of Research Triangle Park, a research park between Durham and Raleigh. Chapel Hill is one of the central cities of the Durham-Chapel Hill MSA, which in turn is part of the Raleigh-Durham-Cary Combined Statistical Area, with a population of 1,998,808.[5]