| County | Rank | Change (2020) ↓ | 2026 Pop. | 2020 Pop. |
|---|---|---|---|---|
| George County | 1 | 10.06% | 26,816 | 24,365 |
| Stone County | 2 | 8.26% | 19,847 | 18,333 |
| Madison County | 3 | 7.73% | 117,681 | 109,237 |
| DeSoto County | 4 | 6.91% | 198,988 | 186,120 |
| Pearl River County | 5 | 6.24% | 59,713 | 56,205 |
| Lafayette County | 6 | 5.74% | 59,119 | 55,912 |
| Lamar County | 7 | 5.44% | 67,892 | 64,391 |
| Harrison County | 8 | 5.2% | 219,678 | 208,821 |
| Rankin County | 9 | 4.02% | 163,469 | 157,155 |
| Webster County | 10 | 3.86% | 10,289 | 9,907 |
| Jackson County | 11 | 3.53% | 148,433 | 143,373 |
| Marshall County | 12 | 3.31% | 34,899 | 33,780 |
| Pontotoc County | 13 | 3.22% | 32,201 | 31,195 |
| Adams County | 14 | 3.13% | 30,346 | 29,426 |
| Union County | 15 | 2.61% | 28,539 | 27,812 |
| Tate County | 16 | 2.49% | 28,824 | 28,125 |
| Hancock County | 17 | 2.42% | 47,236 | 46,121 |
| Leake County | 18 | 2.27% | 21,732 | 21,249 |
| Perry County | 19 | 2.18% | 11,706 | 11,456 |
| Greene County | 20 | 1.45% | 13,727 | 13,531 |
| Forrest County | 21 | 1.35% | 79,255 | 78,198 |
| Prentiss County | 22 | 1.19% | 25,264 | 24,968 |
| Itawamba County | 23 | 1.09% | 24,114 | 23,855 |
| Walthall County | 24 | 1.02% | 14,011 | 13,869 |
| Lee County | 25 | 0.97% | 84,133 | 83,326 |
| Scott County | 26 | 0.92% | 28,226 | 27,968 |
| Oktibbeha County | 27 | 0.66% | 52,036 | 51,697 |
| Lincoln County | 28 | 0.51% | 35,019 | 34,842 |
| Wayne County | 29 | 0.03% | 19,815 | 19,809 |
| Jones County | 30 | -0.41% | 66,891 | 67,167 |
| Alcorn County | 31 | -0.6% | 34,522 | 34,732 |
| Lawrence County | 32 | -0.73% | 11,900 | 11,987 |
| Tishomingo County | 33 | -0.92% | 18,675 | 18,848 |
| Winston County | 34 | -1.14% | 17,488 | 17,689 |
| Neshoba County | 35 | -1.16% | 28,647 | 28,982 |
| Yalobusha County | 36 | -1.24% | 12,290 | 12,444 |
| Panola County | 37 | -1.54% | 32,663 | 33,173 |
| Newton County | 38 | -1.72% | 20,885 | 21,250 |
| Smith County | 39 | -1.79% | 13,946 | 14,200 |
| Amite County | 40 | -1.8% | 12,474 | 12,703 |
| Marion County | 41 | -1.86% | 23,916 | 24,370 |
| Simpson County | 42 | -1.97% | 25,378 | 25,887 |
| Tippah County | 43 | -2% | 21,309 | 21,744 |
| Clay County | 44 | -2.06% | 18,237 | 18,620 |
| Lowndes County | 45 | -2.21% | 57,482 | 58,783 |
| Choctaw County | 46 | -2.43% | 8,005 | 8,204 |
| Chickasaw County | 47 | -2.43% | 16,666 | 17,081 |
| Franklin County | 48 | -2.72% | 7,453 | 7,661 |
| Monroe County | 49 | -2.79% | 33,183 | 34,136 |
| Benton County | 50 | -2.91% | 7,444 | 7,667 |
| Covington County | 51 | -2.98% | 17,754 | 18,299 |
| Copiah County | 52 | -3.18% | 27,365 | 28,263 |
| Grenada County | 53 | -3.5% | 20,818 | 21,574 |
| Lauderdale County | 54 | -3.54% | 70,107 | 72,678 |
| Clarke County | 55 | -3.54% | 14,995 | 15,545 |
| Kemper County | 56 | -3.72% | 8,634 | 8,968 |
| Jefferson Davis County | 57 | -3.75% | 10,851 | 11,274 |
| Jasper County | 58 | -3.96% | 15,702 | 16,350 |
| Pike County | 59 | -4.4% | 38,425 | 40,194 |
| Attala County | 60 | -4.85% | 16,957 | 17,822 |
| Noxubee County | 61 | -4.88% | 9,727 | 10,226 |
| Calhoun County | 62 | -4.93% | 12,571 | 13,223 |
| Montgomery County | 63 | -5.33% | 9,272 | 9,794 |
| Issaquena County | 64 | -6.64% | 1,238 | 1,326 |
| Jefferson County | 65 | -6.69% | 6,763 | 7,248 |
| Hinds County | 66 | -6.93% | 211,058 | 226,778 |
| Warren County | 67 | -7.11% | 41,380 | 44,548 |
| Coahoma County | 68 | -7.4% | 19,657 | 21,228 |
| Carroll County | 69 | -8.76% | 9,067 | 9,937 |
| Bolivar County | 70 | -9.2% | 28,001 | 30,838 |
| Holmes County | 71 | -9.44% | 15,292 | 16,886 |
| Humphreys County | 72 | -11.06% | 6,879 | 7,734 |
| Leflore County | 73 | -11.06% | 25,210 | 28,344 |
| Washington County | 74 | -11.12% | 39,674 | 44,639 |
| Sunflower County | 75 | -11.75% | 22,677 | 25,695 |
| Claiborne County | 76 | -11.76% | 8,024 | 9,093 |
| Tunica County | 77 | -12.38% | 8,527 | 9,732 |
| Wilkinson County | 78 | -13.82% | 7,344 | 8,522 |
| Tallahatchie County | 79 | -14.69% | 10,793 | 12,652 |
| Yazoo County | 80 | -14.78% | 22,728 | 26,671 |
| Quitman County | 81 | -15.53% | 5,201 | 6,157 |
| Sharkey County | 82 | -20.62% | 2,995 | 3,773 |
Mississippi's counties show varied growth patterns from 2020 to 2026. George County leads with 1.61% annualized growth, followed by Stone County (1.33%) and Madison County (1.25%). The largest counties are Harrison County (219,678), Hinds County (211,058), and DeSoto County (198,988). Of the 82 counties in Mississippi, 29 are growing while 53 have experienced population decline. Overall, counties averaged -0.44% annualized growth, with total population growing by 0% annually.
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