| County | Rank | Change (2020) ↓ | 2025 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Berkeley County | 1 | 13.87% | 139,723 | 122,699 |
| Jefferson County | 2 | 8.65% | 62,784 | 57,785 |
| Morgan County | 3 | 5.23% | 17,980 | 17,087 |
| Hampshire County | 4 | 3.76% | 23,954 | 23,085 |
| Monongalia County | 5 | 3.52% | 109,645 | 105,912 |
| Monroe County | 6 | 1.31% | 12,548 | 12,386 |
| Hardy County | 7 | 0.95% | 14,377 | 14,241 |
| Jackson County | 8 | 0.15% | 27,768 | 27,726 |
| Grant County | 9 | -0.35% | 10,957 | 10,995 |
| Upshur County | 10 | -0.35% | 23,734 | 23,818 |
| Preston County | 11 | -0.38% | 34,060 | 34,191 |
| Putnam County | 12 | -0.44% | 57,192 | 57,443 |
| Mineral County | 13 | -0.56% | 26,750 | 26,901 |
| Barbour County | 14 | -1.08% | 15,295 | 15,462 |
| Taylor County | 15 | -1.21% | 16,491 | 16,693 |
| Marion County | 16 | -1.32% | 55,493 | 56,234 |
| Wood County | 17 | -1.88% | 82,567 | 84,146 |
| Harrison County | 18 | -2.14% | 64,431 | 65,842 |
| Nicholas County | 19 | -2.57% | 23,930 | 24,562 |
| Mason County | 20 | -2.71% | 24,725 | 25,413 |
| Raleigh County | 21 | -2.92% | 72,232 | 74,407 |
| Randolph County | 22 | -3.12% | 27,021 | 27,892 |
| Doddridge County | 23 | -3.15% | 7,545 | 7,790 |
| Ohio County | 24 | -3.19% | 40,959 | 42,307 |
| Ritchie County | 25 | -3.19% | 8,153 | 8,422 |
| Tucker County | 26 | -3.35% | 6,528 | 6,754 |
| Braxton County | 27 | -3.49% | 11,963 | 12,396 |
| Cabell County | 28 | -3.5% | 90,942 | 94,245 |
| Summers County | 29 | -3.63% | 11,507 | 11,940 |
| Wayne County | 30 | -3.77% | 37,399 | 38,865 |
| Pocahontas County | 31 | -3.78% | 7,567 | 7,864 |
| Hancock County | 32 | -3.88% | 27,917 | 29,043 |
| Kanawha County | 33 | -3.88% | 173,210 | 180,208 |
| Pendleton County | 34 | -3.9% | 5,890 | 6,129 |
| Lewis County | 35 | -3.94% | 16,349 | 17,020 |
| Greenbrier County | 36 | -4.02% | 31,579 | 32,903 |
| Roane County | 37 | -4.16% | 13,402 | 13,984 |
| Mercer County | 38 | -4.17% | 57,040 | 59,519 |
| Marshall County | 39 | -4.38% | 29,191 | 30,529 |
| Pleasants County | 40 | -4.66% | 7,296 | 7,653 |
| Clay County | 41 | -4.68% | 7,638 | 8,013 |
| Gilmer County | 42 | -5.24% | 7,011 | 7,399 |
| Fayette County | 43 | -5.75% | 38,121 | 40,445 |
| Webster County | 44 | -5.78% | 7,869 | 8,352 |
| Wetzel County | 45 | -5.91% | 13,560 | 14,412 |
| Brooke County | 46 | -6.01% | 21,132 | 22,484 |
| Tyler County | 47 | -6.03% | 7,792 | 8,292 |
| Boone County | 48 | -6.23% | 20,392 | 21,746 |
| Calhoun County | 49 | -6.38% | 5,801 | 6,196 |
| Wirt County | 50 | -6.42% | 4,854 | 5,187 |
| Lincoln County | 51 | -6.45% | 19,055 | 20,368 |
| Logan County | 52 | -7.09% | 30,210 | 32,516 |
| Wyoming County | 53 | -7.75% | 19,666 | 21,319 |
| Mingo County | 54 | -8.89% | 21,399 | 23,487 |
| McDowell County | 55 | -10.93% | 16,869 | 18,939 |
West Virginia's counties show varied growth patterns from 2020 to 2025. Berkeley County leads with 13.87% annualized growth, followed by Jefferson County (8.65%) and Morgan County (5.23%). The largest counties are Kanawha County (173,210), Berkeley County (139,723), and Monongalia County (109,645). Of the 55 counties in West Virginia, 8 are growing while 47 have experienced population decline. Overall, counties averaged -2.75% annualized growth, with total population growing by -1.24% annually.
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