Campbell County is a county in the U.S. state of Wyoming. As of the 2020 United States census, the population was 47,026, making it the third-most populous county in Wyoming. Its county seat is Gillette. Campbell County comprises the Gillette, WY Micropolitan Statistical Area.
History
Campbell County was created in 1911 from land annexed from Crook and Weston Counties. It was named either for John Allen Campbell, a governor of the Wyoming Territory, or for Robert Campbell, a trapper and fur trader associated with William Henry Ashley.
Geography
thumb|right|[[Eagle Butte Mine|Eagle Butte coal mine north of Gillette]]
According to the U.S. Census Bureau, the county has an area of , of which is land and (9.6%) is water.
Adjacent counties
- Powder River County, Montana – north
- Crook County – northeast
- Weston County – southeast
- Converse County – south
- Johnson County – southwest
- Sheridan County – west
Major highways
- 20px Interstate 90
- 20px U.S. Highway 14
- 20px U.S. Highway 16
- 20px Wyoming Highway 50
- 20px Wyoming Highway 51
- 20px Wyoming Highway 59
- 20px Wyoming Highway 387
- 20px Wyoming Highway 450
Transit
- Jefferson Lines
National protected area
- Thunder Basin National Grassland (part)