|Johnston County North Carolina Cities/Towns - Benson, Beulahtown, Clayton, Four Oaks, Kenly, Pine Level, Princeton, Selma, Smithfield (County Seat), West Smithfield
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Johnston County is a county located in the U.S. state of North Carolina. As of July 1, 2016, the estimated population was 191,450. Its county seat is Smithfield.
The county was formed in 1746. It was named for Gabriel Johnston, Governor of North Carolina from 1734 to 1752.