Editing Research Triangle (section)

=== Combined Statistical Area ===
As of September 14, 2018, the US [[Office of Management and Budget]] (OMB) delineated the Raleigh-Durham-Cary Combined Statistical Area as consisting of two metropolitan and one micropolitan statistical areas.<ref>{{cite report |date= September 14, 2018|title= OMB Bulletin No. 18-04|url= https://bidenwhitehouse.archives.gov/wp-content/uploads/2018/09/Bulletin-18-04.pdf|publisher= Office of Management and Budget |page= 142|access-date= 2020-02-06}}</ref>  Those three statistical areas in turn are defined as consisting of a total of nine counties.  The MSAs and their constituent counties are:
* Durham-Chapel Hill MSA
** Chatham County
** Durham County
** Granville County
** Orange County
** Person County
* Henderson μSA
** Vance County
* Raleigh-Cary MSA
** Franklin County
** Johnston County
** Wake County

Prior to September 2018, the OMB had used the name Raleigh-Durham-Chapel Hill Combined Statistical Area and it included several additional counties.<ref>{{cite report |date= April 10, 2018|title= OMB Bulletin No. 18-03|url= https://bidenwhitehouse.archives.gov/wp-content/uploads/2018/04/OMB-BULLETIN-NO.-18-03-Final.pdf|publisher= Office of Management and Budget |page= 141|access-date= 2020-02-06}}</ref> The Dunn Micropolitan Statistical Area (Harnett County) and Sanford Micropolitan Statistical Area (Lee County) were moved to the Fayetteville-Sanford-Lumberton Combined Statistical Area, while the Oxford Micropolitan Statistical Area (Granville County) was folded into the Durham-Chapel Hill Metropolitan Statistical Area. The Raleigh Metropolitan Statistical Area was also renamed the Raleigh-Cary Metropolitan Statistical Area.

The table below outlines the populations of the constituent counties of the Raleigh–Durham-Cary Combined Statistical Area as of the 2020 Census.<ref>{{cite web |url=https://www.census.gov/data/tables/time-series/demo/popest/2010s-counties-total.html |title=County Population Totals and Components of Change: 2010-2020 |publisher=United States Census Bureau |access-date=2021-05-25}}</ref>{{US Census population
| 1950=483418
| 1960=534029
| 1970=628319
| 1980=765191
| 1990=962962
| 2000=1315016
| 2010=1740185
| 2020=2106463
| footnote =2020<ref>{{cite web|url= https://censusreporter.org/profiles/33000US450-raleigh-durham-cary-nc-csa/|title=Raleigh-Durham-Cary, NC CSA|publisher= censusreporter.org|access-date=June 22, 2022}}</ref> }}
{| class="wikitable sortable"
|-
! County
! 2023 Estimate
! 2020 Census
! Change
|-
|[[Wake County, North Carolina|Wake County]]
| {{change|invert=on|1190275|1129410|date=July 1, 2021}}
|-
|[[Durham County, North Carolina|Durham County]]
| {{change|invert=on|336892|324833|date=July 1, 2021}}
|-
|[[Johnston County, North Carolina|Johnston County]]
| {{change|invert=on|241955|215999|date=July 1, 2021}}
|-
|[[Orange County, North Carolina|Orange County]]
| {{change|invert=on|150626|148696|date=July 1, 2021}}
|-
|[[Chatham County, North Carolina|Chatham County]]
| {{change|invert=on|81624|76285|date=July 1, 2021}}
|-
|[[Franklin County, North Carolina|Franklin County]]
| {{change|invert=on|77001|68573|date=July 1, 2021}}
|-
|[[Granville County, North Carolina|Granville County]]
| {{change|invert=on|62192|60992|date=July 1, 2021}}
|-
|[[Vance County, North Carolina|Vance County]]
| {{change|invert=on|42301|42578|date=July 1, 2021}}
|-
|[[Person County, North Carolina|Person County]]
| {{change|invert=on|39737|39097|date=July 1, 2021}}
|- class="sortbottom"
| align="right" |'''Total'''
| {{change|invert=on|2222603|2106463|bold=on|date=July 1, 2021}}
|}