Johnston County, North Carolina

Johnston County
County
Johnston County Courthouse
Flag Seal Logo
Location within the U.S. state of North Carolina
North Carolina's location within the U.S.
Coordinates: 35°31′N 78°22′W / 35.51°N 78.37°W / 35.51; -78.37
Country	United States
State	North Carolina
Established	June 28, 1746 (277 years ago) (1746-06-28)
Named for	Gabriel Johnston
Seat	Smithfield
Largest community	Clayton
Area
• Total	795.65 sq mi (2,060.7 km2)
• Land	792.02 sq mi (2,051.3 km2)
• Water	3.63 sq mi (9.4 km2)  0.46%
Population  (2020)
• Total	215,999
• Estimate  (2023)	241,955
• Density	272.72/sq mi (105.30/km2)
Time zone	UTC−5 (Eastern)
• Summer (DST)	UTC−4 (EDT)
ZIP Codes	27501, 27504, 27520, 27524, 27527, 27529, 27542, 27555, 27557, 27568, 27569, 27576, 27577, 27591, 27592, 27597, 27603, 28334, 28366
Area code	919, 984
Congressional district	13th
Website	johnstonnc.com

Johnston County is a county located in the U.S. state of North Carolina. As of the 2020 census, the population was 215,999.^[1] Its county seat is Smithfield.^[2]

Johnston County is included in the Raleigh-Cary, NC Metropolitan Statistical Area, which is also included in the Raleigh-Durham-Cary, NC Combined Statistical Area, which had an estimated population of 2,368,947 in 2023.^[3]