Washington County is a county located in the U.S. state of North Carolina. As of the 2010 Census, the population was 13,228. Its county seat is Plymouth. The county was formed in 1799 from the western third of Tyrrell County. It was named for George Washington.

Perquimans County is a county located in the U.S. state of North Carolina. As of the 2010 census, the population was 13,453. Its county seat is Hertford. The county was originally created as Berkeley Precinct. It was renamed Perquimans Precinct around 1684 and gained county status in 1739. Perquimans County is part of the Elizabeth City, NC Micropolitan Statistical Area, which is also included in the Virginia Beach-Norfolk, VA-NC Combined Statistical Area. The Harvey Point Defense Testing Activity facility is located in Perquimans County.

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Currituck County () is the northeasternmost county in the U.S. state of North Carolina. As of the 2010 census, the population was 23,547. Its county seat is Currituck. The county was formed in 1668 as a precinct of Albemarle County and later gained county status in 1739. The name is "traditionally said to be an indigenous word for wild geese; Coratank." Currituck County is included in the Virginia Beach-Norfolk-Newport News, VA-NC Metropolitan Area. It is in the northeastern section of the state and is bounded by the Atlantic Ocean, Currituck Sound, Camden County, Dare County and the Commonwealth of Virginia. Currituck Court House, mentioned as early as 1755, was the name of the county seat. Today the words "Court House" have been dropped and only Currituck is used as the town name.