| County | Rank | Change (2020) ↓ | 2025 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Berkeley County | 1 | 12.93% | 138,562 | 122,699 |
| Jefferson County | 2 | 6.18% | 61,359 | 57,785 |
| Morgan County | 3 | 5.79% | 18,077 | 17,087 |
| Hampshire County | 4 | 4.03% | 24,033 | 23,101 |
| Monongalia County | 5 | 3.1% | 109,198 | 105,912 |
| Hardy County | 6 | 1.25% | 14,417 | 14,239 |
| Monroe County | 7 | 0.95% | 12,502 | 12,384 |
| Mineral County | 8 | -0.34% | 26,797 | 26,889 |
| Marion County | 9 | -0.69% | 55,853 | 56,240 |
| Barbour County | 10 | -0.74% | 15,352 | 15,467 |
| Grant County | 11 | -0.94% | 10,887 | 10,990 |
| Preston County | 12 | -0.98% | 33,853 | 34,188 |
| Jackson County | 13 | -1% | 27,445 | 27,723 |
| Putnam County | 14 | -1.19% | 56,760 | 57,444 |
| Pocahontas County | 15 | -2.02% | 7,701 | 7,860 |
| Braxton County | 16 | -2.03% | 12,146 | 12,398 |
| Taylor County | 17 | -2.08% | 16,344 | 16,691 |
| Wood County | 18 | -2.09% | 82,380 | 84,142 |
| Harrison County | 19 | -2.16% | 64,413 | 65,838 |
| Doddridge County | 20 | -2.18% | 7,616 | 7,786 |
| Tucker County | 21 | -2.59% | 6,572 | 6,747 |
| Upshur County | 22 | -2.67% | 23,177 | 23,814 |
| Nicholas County | 23 | -2.72% | 23,889 | 24,558 |
| Pendleton County | 24 | -2.92% | 5,953 | 6,132 |
| Roane County | 25 | -3.03% | 13,563 | 13,987 |
| Cabell County | 26 | -3.15% | 91,276 | 94,240 |
| Randolph County | 27 | -3.39% | 26,946 | 27,892 |
| Greenbrier County | 28 | -3.63% | 31,697 | 32,892 |
| Mason County | 29 | -3.66% | 24,473 | 25,403 |
| Hancock County | 30 | -3.83% | 27,927 | 29,038 |
| Raleigh County | 31 | -3.94% | 71,466 | 74,394 |
| Gilmer County | 32 | -3.98% | 7,102 | 7,396 |
| Ohio County | 33 | -3.98% | 40,656 | 42,341 |
| Kanawha County | 34 | -4.19% | 172,687 | 180,233 |
| Clay County | 35 | -4.2% | 7,669 | 8,005 |
| Mercer County | 36 | -4.32% | 56,947 | 59,519 |
| Ritchie County | 37 | -4.54% | 8,041 | 8,423 |
| Wayne County | 38 | -4.57% | 37,098 | 38,873 |
| Lincoln County | 39 | -4.72% | 19,401 | 20,363 |
| Fayette County | 40 | -4.92% | 38,440 | 40,428 |
| Wetzel County | 41 | -5.02% | 13,682 | 14,405 |
| Summers County | 42 | -5.03% | 11,339 | 11,939 |
| Lewis County | 43 | -5.1% | 16,152 | 17,020 |
| Marshall County | 44 | -5.29% | 28,881 | 30,494 |
| Webster County | 45 | -6.02% | 7,853 | 8,356 |
| Pleasants County | 46 | -6.61% | 7,144 | 7,650 |
| Wirt County | 47 | -7.17% | 4,816 | 5,188 |
| Calhoun County | 48 | -7.42% | 5,739 | 6,199 |
| Logan County | 49 | -7.52% | 30,069 | 32,514 |
| Wyoming County | 50 | -7.67% | 19,687 | 21,322 |
| Brooke County | 51 | -7.76% | 20,731 | 22,476 |
| Boone County | 52 | -8.42% | 19,914 | 21,744 |
| Tyler County | 53 | -8.61% | 7,577 | 8,291 |
| Mingo County | 54 | -9.83% | 21,179 | 23,488 |
| McDowell County | 55 | -11.78% | 16,705 | 18,935 |
West Virginia's counties show varied growth patterns from 2020 to 2025. Berkeley County leads with 12.93% annualized growth, followed by Jefferson County (6.18%) and Morgan County (5.79%). The largest counties are Kanawha County (172,687), Berkeley County (138,562), and Monongalia County (109,198). Of the 55 counties in West Virginia, 7 are growing while 48 have experienced population decline. Overall, counties averaged -3.06% annualized growth, with total population growing by -1.64% annually.