The state of Wyoming has a total of 23 counties. Laramie County is the oldest (founded in 1867), while Teton County is the youngest (established in 1921).

Laramie County is the most populous, with a population of 94,483. Sweetwater County has the most land area (27,003 km2), while Hot Springs County has the smallest (5,190 km2). P

lease check the list of Wyoming counties below, which is organized alphabetically.

• 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