Morrisville is a town located primarily in Wake County, North Carolina, United States. According to the 2020 census, the population was 29,630. 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 Raleigh-Durham-Cary, NC Combined Statistical Area. The population of the Raleigh-Durham-Cary, NC Combined Statistical Area was 2,106,463 in 2020, while the population of the Raleigh-Cary, NC Metropolitan Statistical Area was 1,413,982 in 2020. The operational headquarters of Lenovo is located in the municipal limits.

Durham County is a county located in the U.S. state of North Carolina. As of the 2020 census, the population was 324,833, making it the sixth-most populous county in North Carolina. Its county seat is Durham, which is the only incorporated municipality predominantly in the county, though very small portions of cities and towns mostly in neighboring counties also extend into Durham County. The central and southern parts of Durham County are highly urban, consisting of the city as well as several unincorporated suburbs. Southeastern Durham County is dominated by the Research Triangle Park, most of which is in Durham County. The northern third of Durham County is rural in nature.