Albany County (1868 - Present)
Big Horn County (1890 - Present)
Campbell County (1911 - Present)
Carbon County (1868 - Present)
Carter County (1867 - Present)
Converse County (1888 - Present)
Crook County (1875 - Present)
Fremont County (1884 - Present)
Goshen County (1911 - Present)
Hot Springs County (1911 - Present)
Laramie County (1867 - Present)
Lincoln County (1911 - Present)
Natrona County (1888 - Present)
Niobrara County (1911 - Present)
Park County (1909 - Present)
Pease County (1875 - Present)
Platte County (1911 - Present)
Sheridan County (1888 - Present)
Sublette County (1921 - Present)
Teton County (1921 - Present)
Uinta County (1869 - Present)
Washakie County (1911 - Present)
Weston County (1890 - Present)