Onslow County
Also known as Onslow County, North Carolina, Onslow County, NC
county in North Carolina, United States
Key facts
- Country
- United States
- State
- North Carolina
- Named after
- Arthur Onslow
- Seat
- Jacksonville
- Largest community
- Jacksonville
- Total
- 905.20 sq mi (2,344.5 km )
- Land
- 762.08 sq mi (1,973.8 km )
- Water
- 143.12 sq mi (370.7 km ) 15.81%
- Estimate 2025
- 217,175
- Density
- 268.44/sq mi (103.65/km )
- Time zone
- UTC−5 ( Eastern )
- Summer dst
- UTC−4 ( EDT )
- Congressional district
Article
Onslow County is a county located in the U.S. state of North Carolina. As of the 2020 census, the population was 204,576. Its county seat is Jacksonville. The county was created in 1734 as Onslow Precinct and gained county status in 1739. Onslow County comprises the Jacksonville, NC Metropolitan Statistical Area. The southern border of the county is the coast of the Atlantic Ocean.
History