Johnston County, North Carolina
Johnston County, North Carolina | |
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Seal Logo | |
Location within the U.S. state of North Carolina | |
Interactive map of Johnston County, North Carolina | |
| Coordinates: 35°31′N 78°22′W / 35.51°N 78.37°W | |
| Country | United States |
| State | North Carolina |
| Established | June 28, 1746 |
| Named after | 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 (2024) | 249,794 |
| • 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 |
Johnston County is a county located in the U.S. state of North Carolina. As of the 2020 census, its population was 215,999. Its county seat is Smithfield. 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.