Adams County (1799 - Present)
Alcorn County (1870 - Present)
Amite County (1809 - Present)
Attala County (1833 - Present)
Bainbridge County (1823 - 1824)
Benton County (1870 - Present)
Bolivar County (1836 - Present)
Calhoun County (1852 - Present)
Carroll County (1833 - Present)
Chickasaw County (1836 - Present)
Choctaw County (1833 - Present)
Claiborne County (1802 - Present)
Clarke County (1833 - Present)
Coahoma County (1836 - Present)
Colfax County (1871 - Present)
Copiah County (1823 - Present)
Covington County (1819 - Present)
De Soto County (1836 - Present)
Forrest County (1908 - Present)
Franklin County (1809 - Present)
George County (1910 - Present)
Greene County (1811 - Present)
Grenada County (1870 - Present)
Hancock County (1812 - Present)
Harrison County (1841 - Present)
Hinds County (1821 - Present)
Holmes County (1833 - Present)
Humphreys County (1918 - Present)
Issaquena County (1844 - Present)
Itawamba County (1836 - Present)
Jackson County (1812 - Present)
Jasper County (1833 - Present)
Jefferson County (1799 - Present)
Jefferson Davis County (1906 - Present)
Jones County (1826 - Present)
Kemper County (1833 - Present)
Lafayette County (1836 - Present)
Lamar County (1904 - Present)
Lauderdale County (1833 - Present)
Lawrence County (1814 - Present)
Leake County (1833 - Present)
Lee County (1866 - Present)
Leflore County (1871 - Present)
Lincoln County (1870 - Present)
Lowndes County (1830 - Present)
Madison County (1828 - Present)
Marion County (1811 - Present)
Marshall County (1836 - Present)
Monroe County (1821 - Present)
Montgomery County (1871 - Present)
Neshoba County (1833 - Present)
Newton County (1836 - Present)
Noxubee County (1833 - Present)
Oktibbeha County (1833 - Present)
Panola County (1836 - Present)
Pearl County (1872 - 1878)
Pearl River County (1890 - Present)
Perry County (1820 - Present)
Pike County (1815 - Present)
Pontotoc County (1836 - Present)
Prentiss County (1870 - Present)
Quitman County (1877 - Present)
Rankin County (1828 - Present)
Scott County (1833 - Present)
Sharkey County (1876 - Present)
Simpson County (1824 - Present)
Smith County (1833 - Present)
Stone County (1916 - Present)
Sumner County (1874 - Present)
Sunflower County (1844 - Present)
Tallahatchie County (1833 - Present)
Tate County (1873 - Present)
Tippah County (1836 - Present)
Tishomingo County (1836 - Present)
Tunica County (1836 - Present)
Union County (1870 - Present)
Walthall County (1914 - Present)
Warren County (1809 - Present)
Washington County (1827 - Present)
Wayne County (1809 - Present)
Wilkinson County (1802 - Present)
Winston County (1833 - Present)
Yalobusha County (1833 - Present)
Yazoo County (1823 - Present)