Sebastian County
Also known as Sebastian County, Arkansas, Sebastian County, AR
county in Arkansas, United States
Key facts
- Country
- United States
- State
- Arkansas
- Founded
- January 6, 1851
- Named after
- William K. Sebastian
- Seat
- Fort Smith (northern district);, Greenwood (southern district)
- Largest city
- Fort Smith
- Total
- 546 sq mi (1,410 km )
- Land
- 532 sq mi (1,380 km )
- Water
- 14 sq mi (36 km ) 2.6%
- Estimate 2025
- 130,641
- Density
- 240/sq mi (92.8/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
~15 min read
Article
Sebastian County is a county located in the U.S. state of Arkansas. As of the 2020 census, the population was 127,799, making it the fourth-most populous county in Arkansas. The county has two county seats, Greenwood and Fort Smith.
Sebastian County is part of the Fort Smith metropolitan area.
Gallery (7)
On the map
2 mapped locations