Morrisville is a town in Wake County, North Carolina, United States. A small portion of the town extends into Durham County. The population was 14,954 according to a July 2008 estimate. Morrisville is part of the Research Triangle metropolitan region. The regional name originated after the 1959 creation of the Research Triangle Park, located midway between the cities of Raleigh and Durham. The Research Triangle region encompasses the U.S. Census Bureau's Combined Statistical Area (CSA) of Raleigh-Durham-Cary. The estimated population of the Raleigh-Durham-Cary CSA was 1,565,223 as of July 1, 2006, with the Raleigh-Cary Metropolitan Statistical Area (MSA) portion estimated at 994,551 residents.

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