There are a total of 23 counties in the state of Wyoming. Among them, Laramie County is the oldest one (established in 1867) while Teton County is the youngest (established in 1921). With population of 94,483, Laramie County is the most populated. The biggest county by land area is Sweetwater County (27,003 km2) and the smallest is Hot Springs County (5,190 km2). Below please see all Wyoming counties which are listed in alphabetical order.
- Albany County, WY
- Big Horn County, WY
- Campbell County, WY
- Carbon County, WY
- Converse County, WY
- Crook County, WY
- Fremont County, WY
- Goshen County, WY
- Hot Springs County, WY
- Johnson County, WY
- Laramie County, WY
- Lincoln County, WY
- Natrona County, WY
- Niobrara County, WY
- Park County, WY
- Platte County, WY
- Sheridan County, WY
- Sublette County, WY
- Sweetwater County, WY
- Teton County, WY
- Uinta County, WY
- Washakie County, WY
- Weston County, WY
Map of Wyoming Counties
