Adams County	001	Natchez	1799	One of two original counties	John Adams, second U.S. President	32,297	460 sq mi
(1,191 km2)	State map highlighting Adams County
Alcorn County	003	Corinth	1870	Formed from Tippiah and Tishomingo Counties	James L. Alcorn, Reconstruction-era U.S. Senator from Mississippi	37,057	400 sq mi
(1,036 km2)	State map highlighting Alcorn County
Amite County	005	Liberty	1809	Formed from Wilkinson County	Amite River	13,131	730 sq mi
(1,891 km2)	State map highlighting Amite County
Attala County	007	Kosciusko	1833	Formed from Madison County	A fictional Native American heroine from an early 19th-century novel by Françs-Renée Chateaubriand.	19,564	735 sq mi
(1,904 km2)	State map highlighting Attala County
Benton County	009	Ashland	1870	Formed from Marshall and Tippah Counties	Thomas Hart Benton, U.S. Senator from Missouri and prominent westward expansion advocate	8,729	407 sq mi
(1,054 km2)	State map highlighting Benton County
Bolivar County	011	Cleveland and Rosedale	1836	Formed from Tallahatchie and Washington Counties	Simon Bolivar, South American democratic revolutionary	34,145	876 sq mi
(2,269 km2)	State map highlighting Bolivar County
Calhoun County	013	Pittsboro	1852	Formed from Chickasaw, Lafayette and Yalobusha Counties	John C. Calhoun, U.S. Senator from South Carolina and prominent supporter of states' rights	14,962	587 sq mi
(1,520 km2)	State map highlighting Calhoun County
Carroll County	015	Carrollton and Vaiden	1833	Formed from Lowndes, Monroe, Washington and Yazoo Counties	Charles Carroll, last surviving signer of the Declaration of Independence	10,597	628 sq mi
(1,627 km2)	State map highlighting Carroll County
Chickasaw County	017	Houston and Okolona	1836	Formed from Monroe County and Un-Organized	Chickasaw Native Americans	17,392	502 sq mi
(1,300 km2)	State map highlighting Chickasaw County
Choctaw County	019	Ackerman	1833	Formed from Lowndes, Madison, Monroe and Yazoo Counties	Choctaw Native Americans	8,547	419 sq mi
(1,085 km2)	State map highlighting Choctaw County
Claiborne County	021	Port Gibson	1802	Formed from Jefferson (Pickering) County	William C. C. Claiborne, Governor of the Mississippi Territory	9,604	487 sq mi
(1,261 km2)	State map highlighting Claiborne County
Clarke County	023	Quitman	1833	Formed from Wayne County	Joshua G. Clark, the first elected judge following admittance to the Union	16,732	691 sq mi
(1,790 km2)	State map highlighting Clarke County
Clay County	025	West Point	1871	Formed from Chickasaw, Lowndes, Monroe and Oktibbeha Counties (formerly (Colfax County)	Henry Clay, U.S. Senator from Kentucky and giant of 19th century politics	20,634	409 sq mi
(1,059 km2)	State map highlighting Clay County
Coahoma County	027	Clarksdale	1836	Formed from Un-Organized	derives from Native American word meaning "red panther"	26,151	554 sq mi
(1,435 km2)	State map highlighting Coahoma County
Copiah County	029	Hazlehurst	1823	Formed from Franklin and Hinds Counties	derives from Native American word meaning "calling panther"	29,449	777 sq mi
(2,012 km2)	State map highlighting Copiah County
Covington County	031	Collins	1819	Formed from Lawrence and Wayne Counties	Leonard Covington, War of 1812 general	19,568	414 sq mi
(1,072 km2)	State map highlighting Covington County
DeSoto County	033	Hernando	1836	Formed from Monroe and Washington Counties	Hernando de Soto, Spanish explorer of the Americas	161,252	478 sq mi
(1,238 km2)	State map highlighting DeSoto County
Forrest County	035	Hattiesburg	1906	Formed from Perry County	Nathan B. Forrest, Confederate general	74,934	467 sq mi
(1,210 km2)	State map highlighting Forrest County
Franklin County	037	Meadville	1809	Formed from Adams County	Benjamin Franklin, writer, orator, publisher, and U.S. founding father	8,118	565 sq mi
(1,463 km2)	State map highlighting Franklin County
George County	039	Lucedale	1910	Formed from Greene and Jackson Counties	James Z. George, U.S. Senator from Mississippi	22,578	478 sq mi
(1,238 km2)	State map highlighting George County
Greene County	041	Leakesville	1811	Formed from Wayne County	Nathanael Greene, American Revolutionary War general	14,400	713 sq mi
(1,847 km2)	State map highlighting Greene County
Grenada County	043	Grenada	1870	Formed from Carroll, Choctaw, Tallahatchie and Yalobusha Counties	Spanish province of Granada (spelling variation)	21,906	422 sq mi
(1,093 km2)	State map highlighting Grenada County
Hancock County	045	Bay Saint Louis	1812	Formed from Un-Organized	John Hancock, first signer of the Declaration of Independence	43,929	477 sq mi
(1,235 km2)	State map highlighting Hancock County
Harrison County	047	Gulfport and Biloxi	1841	Formed from Hancock County	William Henry Harrison, ninth U.S. President	187,105	581 sq mi
(1,505 km2)	State map highlighting Harrison County
Hinds County	049	Jackson and Raymond	1821	Formed from Un-Organized (Choctaw Cession of 1820)	Thomas Hinds, War of 1812 general	245,285	869 sq mi
(2,251 km2)	State map highlighting Hinds County
Holmes County	051	Lexington	1833	Formed from Yazoo County	David Holmes, first Governor of Mississippi	19,198	756 sq mi
(1,958 km2)	State map highlighting Holmes County
Humphreys County	053	Belzoni	1918	Formed from Holmes, Sunflower, Washington and Yazoo Counties	Benjamin G. Humphreys, Reconstruction-era Governor of Mississippi	9,375	418 sq mi
(1,083 km2)	State map highlighting Humphreys County
Issaquena County	055	Mayersville	1844	Formed from Washington County	Native American word for "Deer River"	1,406	413 sq mi
(1,070 km2)	State map highlighting Issaquena County
Itawamba County	057	Fulton	1836	Formed from Monroe County	Itawamba, Chickasaw chief	23,401	532 sq mi
(1,378 km2)	State map highlighting Itawamba County
Jackson County	059	Pascagoula	1812	Formed from Un-Organized	Andrew Jackson, War of 1812 hero and seventh U.S. President	139,668	727 sq mi
(1,883 km2)	State map highlighting Jackson County
Jasper County	061	Bay Springs and Paulding	1833	Formed from Jones and Wayne Counties	William Jasper, Revolutionary War sergeant	17,062	676 sq mi
(1,751 km2)	State map highlighting Jasper County
Jefferson County	063	Fayette	1799	One of two original Counties (formerly Pickering)	Thomas Jefferson, third U.S. President and principal author of the Declaration of Independence	7,726	519 sq mi
(1,344 km2)	State map highlighting Jefferson County
Jefferson Davis County	065	Prentiss	1906	Formed from Covington and Lawrence Counties	Jefferson Davis, C.S. President	12,487	408 sq mi
(1,057 km2)	State map highlighting Jefferson Davis County
Jones County	067	Laurel and Ellisville	1826	Formed from Covington and Wayne Counties (formerly Davis (1865-1869 (Civil War))	John Paul Jones, Revolutionary War naval captain	67,761	694 sq mi
(1,797 km2)	State map highlighting Jones County
Kemper County	069	De Kalb	1833	Formed from Lowndes, Rankin and Wayne Counties	Reuben Kemper, American pioneer and revolutionary in Spanish Florida	10,456	766 sq mi
(1,984 km2)	State map highlighting Kemper County
Lafayette County	071	Oxford	1836	Formed from Monroe County	Marquis de la Fayette, French-born Revolutionary War general	47,351	631 sq mi
(1,634 km2)	State map highlighting Lafayette County
Lamar County	073	Purvis	1904	Formed from Marion and Pearl River Counties	Lucius Q. C. Lamar, U.S. Senator from Mississippi and United States Secretary of the Interior	55,658	497 sq mi
(1,287 km2)	State map highlighting Lamar County
Lauderdale County	075	Meridian	1833	Formed from Rankin and Wayne Counties	James Lauderdale, War of 1812 colonel	80,261	704 sq mi
(1,823 km2)	State map highlighting Lauderdale County
Lawrence County	077	Monticello	1814	Formed from Marion County	James Lawrence, War of 1812 naval captain	12,929	431 sq mi
(1,116 km2)	State map highlighting Lawrence County
Leake County	079	Carthage	1833	Formed from Madison and Rankin Counties	Walter Leake, Governor of Mississippi	23,805	583 sq mi
(1,510 km2)	State map highlighting Leake County
Lee County	081	Tupelo	1866	Formed from Itawamba and Pontotoc Counties	Robert E. Lee, General in Chief of the Armies of the Confederate States	82,910	450 sq mi
(1,165 km2)	State map highlighting Lee County
Leflore County	083	Greenwood	1871	Formed from Carroll and Sunflower Counties	Greenwood LeFlore, mixed-race advocate of citizenship for Native Americans and U.S. Senator from Mississippi	32,317	592 sq mi
(1,533 km2)	State map highlighting Leflore County
Lincoln County	085	Brookhaven	1870	Formed from Amite, Copiah, Franklin, Lawrence and Pike Counties	Abraham Lincoln, sixteenth U.S. President	34,869	586 sq mi
(1,518 km2)	State map highlighting Lincoln County
Lowndes County	087	Columbus	1830	Formed from Monroe County and Un-Organized	William Jones Lowndes, U.S. Representative from South Carolina	59,779	502 sq mi
(1,300 km2)	State map highlighting Lowndes County
Madison County	089	Canton	1828	Formed from Yazoo County	James Madison, fourth U.S. President	95,203	719 sq mi
(1,862 km2)	State map highlighting Madison County
Marion County	091	Columbia	1811	Formed from Amite, Franklin and Wayne Counties	Francis Marion, Revolutionary War general	27,088	542 sq mi
(1,404 km2)	State map highlighting Marion County
Marshall County	093	Holly Springs	1836	Formed from Monroe County	John Marshall, Chief Justice of the United States who shaped the Supreme Court's power	37,144	706 sq mi
(1,829 km2)	State map highlighting Marshall County
Monroe County	095	Aberdeen	1821	Formed from Un-Organized (Chickasaw Cession of 1816)	James Monroe, fifth U.S. President	36,989	764 sq mi
(1,979 km2)	State map highlighting Monroe County
Montgomery County	097	Winona	1871	Formed from Carroll and Choctaw Counties	Richard Montgomery, Revolutionary War general	10,925	407 sq mi
(1,054 km2)	State map highlighting Montgomery County
Neshoba County	099	Philadelphia	1833	Formed from Jones, Madison, Rankin and Wayne Counties	Native American word for "gray wolf"	29,676	570 sq mi
(1,476 km2)	State map highlighting Neshoba County
Newton County	101	Decatur	1836	Formed from Neshoba County	Isaac Newton, English scientist	21,720	578 sq mi
(1,497 km2)	State map highlighting Newton County
Noxubee County	103	Macon	1833	Formed from Lowndes and Rankin Counties	Native American for "stinking water"	11,545	695 sq mi
(1,800 km2)	State map highlighting Noxubee County
Oktibbeha County	105	Starkville	1833	Formed from Lowndes County	Native American word for "bloody water"	47,671	458 sq mi
(1,186 km2)	State map highlighting Oktibbeha County
Panola County	107	Batesville and Sardis	1836	Formed from Monroe and Washington Counties	Native American for "cotton"	34,707	684 sq mi
(1,772 km2)	State map highlighting Panola County
Pearl River County	109	Poplarville	1890	Formed from Hancock and Marion Counties	Pearl River	55,834	812 sq mi
(2,103 km2)	State map highlighting Pearl River County
Perry County	111	New Augusta	1820	Formed from Greene County	Oliver Hazard Perry, War of 1812 naval captain	12,250	647 sq mi
(1,676 km2)	State map highlighting Perry County
Pike County	113	Magnolia	1815	Formed from Marion County	Zebulon Pike, western explorer	40,404	409 sq mi
(1,059 km2)	State map highlighting Pike County
Pontotoc County	115	Pontotoc	1836	Formed from Monroe County	Native American for "land of hanging grapes"	29,957	497 sq mi
(1,287 km2)	State map highlighting Pontotoc County
Prentiss County	117	Booneville	1870	Formed from Itawamba and Tishomingo Counties	Seargent Smith Prentiss, U.S. Representative from Mississippi	25,276	415 sq mi
(1,075 km2)	State map highlighting Prentiss County
Quitman County	119	Marks	1877	Formed from Coahoma, Panola, Tallahatchie and Tunica Counties	John A. Quitman, Governor of Mississippi	8,223	405 sq mi
(1,049 km2)	State map highlighting Quitman County
Rankin County	121	Brandon	1828	Formed from Hinds County	Christopher Rankin, U.S. Representative from Mississippi	141,617	775 sq mi
(2,007 km2)	State map highlighting Rankin County
Scott County	123	Forest	1833	Formed from Covington, Jones and Rankin Counties	Abram M. Scott, Governor of Mississippi	28,264	609 sq mi
(1,577 km2)	State map highlighting Scott County
Sharkey County	125	Rolling Fork	1876	Formed from Issaquena, Warren and Washington Counties	William L. Sharkey, Mississippi Supreme Court justice	4,916	428 sq mi
(1,109 km2)	State map highlighting Sharkey County
Simpson County	127	Mendenhall	1824	Formed from Copiah County	Josiah Simpson, first federal judge appointed in the state	27,503	589 sq mi
(1,526 km2)	State map highlighting Simpson County
Smith County	129	Raleigh	1833	Formed from Covington, Jones and Rankin Counties	David Smith, Revolutionary War major	16,491	636 sq mi
(1,647 km2)	State map highlighting Smith County
Stone County	131	Wiggins	1916	Formed from Harrison County	John M. Stone, Governor of Mississippi	17,786	445 sq mi
(1,153 km2)	State map highlighting Stone County
Sunflower County	133	Indianola	1844	Formed from Bolivar County	Sunflower River	29,450	694 sq mi
(1,797 km2)	State map highlighting Sunflower County
Tallahatchie County	135	Charleston and Sumner	1833	Formed from Washington and Yazoo Counties	Tallahatchie River	15,378	644 sq mi
(1,668 km2)	State map highlighting Tallahatchie County
Tate County	137	Senatobia	1873	Formed from DeSoto and Marshall Counties	Thomas Simpson Tate, the county's original settler	28,886	404 sq mi
(1,046 km2)	State map highlighting Tate County
Tippah County	139	Ripley	1836	Formed from Monroe County	Native American word for "cut off"	22,232	458 sq mi
(1,186 km2)	State map highlighting Tippah County
Tishomingo County	141	Iuka	1836	Formed from Monroe County	Chief Tishomingo, Chickasaw leader	19,593	424 sq mi
(1,098 km2)	State map highlighting Tishomingo County
Tunica County	143	Tunica	1836	Formed from Washington County and Un-Organized	Tunica Native Americans	10,778	455 sq mi
(1,178 km2)	State map highlighting Tunica County
Union County	145	New Albany	1870	Formed from Lee, Pontotoc and Tippah Counties	Reunion of Confederacy with the United States	27,134	416 sq mi
(1,077 km2)	State map highlighting Union County
Walthall County	147	Tylertown	1912	Formed from Marion and Pike Counties	Edward Walthall, U.S. Senator from Mississippi	15,443	404 sq mi
(1,046 km2)	State map highlighting Walthall County
Warren County	149	Vicksburg	1809	Formed from Claiborne County	Joseph Warren, Revolutionary War general	48,773	587 sq mi
(1,520 km2)	State map highlighting Warren County
Washington County	151	Greenville	1827	Formed from Warren and Yazoo Counties	George Washington, first U.S. President	51,137	724 sq mi
(1,875 km2)	State map highlighting Washington County
Wayne County	153	Waynesboro	1809	Formed from Washington County (AL)	Anthony Wayne, Revolutionary War general	20,747	810 sq mi
(2,098 km2)	State map highlighting Wayne County
Webster County	155	Walthall	1874	Formed from Chickasaw, Choctaw and Montegomery Counties (formerly Sumner County)	Daniel Webster, U.S. Senator from Massachusetts and giant of Nineteenth Century politics	10,253	423 sq mi
(1,096 km2)	State map highlighting Webster County
Wilkinson County	157	Woodville	1802	Formed from Adams County	James Wilkinson, Revolutionary War general	9,878	677 sq mi
(1,753 km2)	State map highlighting Wilkinson County
Winston County	159	Louisville	1833	Formed from Lowndes, Rankin, and Wayne Counties	Louis Winston, Mississippi Supreme Court justice	19,198	607 sq mi
(1,572 km2)	State map highlighting Winston County
Yalobusha County	161	Water Valley and Coffeeville	1833	Formed from Monroe, Washington and Yazoo Counties	Native American for "tadpole place"	12,678	467 sq mi
(1,210 km2)	State map highlighting Yalobusha County
Yazoo County	163	Yazoo City	1823	Formed from Hinds County	Yazoo Native Americans	28,065	920 sq mi
(2,383 km2)	State map highlighting Yazoo County