| Rank |
County |
Population (2012) |
| 1 |
Hinds County, Mississippi
|
248,643
|
| 2 |
Harrison County, Mississippi
|
194,029
|
| 3 |
DeSoto County, Mississippi
|
166,234
|
| 4 |
Rankin County, Mississippi
|
145,165
|
| 5 |
Jackson County, Mississippi
|
140,298
|
| 6 |
Madison County, Mississippi
|
98,468
|
| 7 |
Lee County, Mississippi
|
85,042
|
| 8 |
Lauderdale County, Mississippi
|
80,220
|
| 9 |
Forrest County, Mississippi
|
76,894
|
| 10 |
Jones County, Mississippi
|
68,641
|
| 11 |
Lowndes County, Mississippi
|
59,670
|
| 12 |
Lamar County, Mississippi
|
57,786
|
| 13 |
Pearl River County, Mississippi
|
55,295
|
| 14 |
Washington County, Mississippi
|
49,750
|
| 15 |
Lafayette County, Mississippi
|
49,495
|
| 16 |
Oktibbeha County, Mississippi
|
48,192
|
| 17 |
Warren County, Mississippi
|
48,084
|
| 18 |
Hancock County, Mississippi
|
45,255
|
| 19 |
Pike County, Mississippi
|
40,100
|
| 20 |
Alcorn County, Mississippi
|
37,164
|
| 21 |
Marshall County, Mississippi
|
36,612
|
| 22 |
Monroe County, Mississippi
|
36,421
|
| 23 |
Lincoln County, Mississippi
|
34,900
|
| 24 |
Panola County, Mississippi
|
34,473
|
| 25 |
Bolivar County, Mississippi
|
33,904
|
| 26 |
Adams County, Mississippi
|
32,122
|
| 27 |
Leflore County, Mississippi
|
30,948
|
| 28 |
Pontotoc County, Mississippi
|
30,594
|
| 29 |
Neshoba County, Mississippi
|
29,785
|
| 30 |
Copiah County, Mississippi
|
28,955
|
| 31 |
Tate County, Mississippi
|
28,490
|
| 32 |
Sunflower County, Mississippi
|
28,431
|
| 33 |
Scott County, Mississippi
|
28,250
|
| 34 |
Yazoo County, Mississippi
|
28,195
|
| 35 |
Union County, Mississippi
|
27,414
|
| 36 |
Simpson County, Mississippi
|
27,374
|
| 37 |
Marion County, Mississippi
|
26,442
|
| 38 |
Coahoma County, Mississippi
|
25,709
|
| 39 |
Prentiss County, Mississippi
|
25,390
|
| 40 |
Itawamba County, Mississippi
|
23,340
|
| 41 |
Leake County, Mississippi
|
23,297
|
| 42 |
George County, Mississippi
|
22,930
|
| 43 |
Tippah County, Mississippi
|
22,025
|
| 44 |
Grenada County, Mississippi
|
21,682
|
| 45 |
Newton County, Mississippi
|
21,601
|
| 46 |
Wayne County, Mississippi
|
20,661
|
| 47 |
Clay County, Mississippi
|
20,427
|
| 48 |
Covington County, Mississippi
|
19,607
|
| 49 |
Tishomingo County, Mississippi
|
19,591
|
| 50 |
Attala County, Mississippi
|
19,157
|
| 51 |
Winston County, Mississippi
|
19,029
|
| 52 |
Holmes County, Mississippi
|
18,796
|
| 53 |
Stone County, Mississippi
|
18,028
|
| 54 |
Chickasaw County, Mississippi
|
17,416
|
| 55 |
Clarke County, Mississippi
|
16,556
|
| 56 |
Jasper County, Mississippi
|
16,523
|
| 57 |
Smith County, Mississippi
|
16,345
|
| 58 |
Tallahatchie County, Mississippi
|
15,111
|
| 59 |
Walthall County, Mississippi
|
15,100
|
| 60 |
Calhoun County, Mississippi
|
14,843
|
| 61 |
Greene County, Mississippi
|
14,311
|
| 62 |
Amite County, Mississippi
|
12,957
|
| 63 |
Lawrence County, Mississippi
|
12,551
|
| 64 |
Yalobusha County, Mississippi
|
12,401
|
| 65 |
Perry County, Mississippi
|
12,086
|
| 66 |
Jefferson Davis County, Mississippi
|
12,032
|
| 67 |
Noxubee County, Mississippi
|
11,218
|
| 68 |
Montgomery County, Mississippi
|
10,614
|
| 69 |
Tunica County, Mississippi
|
10,475
|
| 70 |
Carroll County, Mississippi
|
10,423
|
| 71 |
Kemper County, Mississippi
|
10,335
|
| 72 |
Webster County, Mississippi
|
10,039
|
| 73 |
Wilkinson County, Mississippi
|
9,432
|
| 74 |
Claiborne County, Mississippi
|
9,349
|
| 75 |
Humphreys County, Mississippi
|
9,189
|
| 76 |
Benton County, Mississippi
|
8,730
|
| 77 |
Choctaw County, Mississippi
|
8,346
|
| 78 |
Franklin County, Mississippi
|
7,918
|
| 79 |
Quitman County, Mississippi
|
7,798
|
| 80 |
Jefferson County, Mississippi
|
7,638
|
| 81 |
Sharkey County, Mississippi
|
4,799
|
| 82 |
Issaquena County, Mississippi
|
1,386
|