| | Population Estimates Base, April 1, 2000 | Population Estimate, July 1, 2009 | Numeric Population Change, April 1, 2000 to July 1, 2009 | Percent Population Change, April 1, 2000 to July 1, 2009 |
|
| United States | 281,424,602 | 307,006,550 | 25,581,948 | 9.1% |
| Appalachian Region | 23,642,949 | 24,993,391 | 1,350,442 | 5.7% |
| West Virginia | 1,808,344 | 1,819,777 | 11,433 | 0.6% |
|
| County |
| Barbour | 15,561 | 15,758 | 197 | 1.3% |
| Berkeley | 75,905 | 103,854 | 27,949 | 36.8% |
| Boone | 25,535 | 24,709 | -826 | -3.2% |
| Braxton | 14,702 | 14,434 | -268 | -1.8% |
| Brooke | 25,543 | 23,509 | -2,034 | -8.0% |
| Cabell | 96,785 | 95,214 | -1,571 | -1.6% |
| Calhoun | 7,582 | 7,118 | -464 | -6.1% |
| Clay | 10,330 | 10,022 | -308 | -3.0% |
| Doddridge | 7,403 | 7,202 | -201 | -2.7% |
| Fayette | 47,579 | 46,123 | -1,456 | -3.1% |
| Gilmer | 7,160 | 6,824 | -336 | -4.7% |
| Grant | 11,299 | 11,833 | 534 | 4.7% |
| Greenbrier | 34,453 | 34,527 | 74 | 0.2% |
| Hampshire | 20,202 | 22,695 | 2,493 | 12.3% |
| Hancock | 32,571 | 29,729 | -2,842 | -8.7% |
| Hardy | 12,669 | 13,611 | 942 | 7.4% |
| Harrison | 68,651 | 68,911 | 260 | 0.4% |
| Jackson | 28,000 | 28,067 | 67 | 0.2% |
| Jefferson | 42,190 | 52,750 | 10,560 | 25.0% |
| Kanawha | 200,076 | 191,663 | -8,413 | -4.2% |
| Lewis | 16,919 | 17,391 | 472 | 2.8% |
| Lincoln | 22,108 | 22,147 | 39 | 0.2% |
| Logan | 37,710 | 35,498 | -2,212 | -5.9% |
| Marion | 56,598 | 56,706 | 108 | 0.2% |
| Marshall | 35,519 | 32,556 | -2,963 | -8.3% |
| Mason | 25,959 | 25,568 | -391 | -1.5% |
| McDowell | 27,329 | 22,398 | -4,931 | -18.0% |
| Mercer | 62,980 | 61,921 | -1,059 | -1.7% |
| Mineral | 27,078 | 27,204 | 126 | 0.5% |
| Mingo | 28,253 | 26,387 | -1,866 | -6.6% |
| Monongalia | 81,867 | 90,080 | 8,213 | 10.0% |
| Monroe | 13,194 | 13,715 | 521 | 3.9% |
| Morgan | 14,943 | 16,385 | 1,442 | 9.7% |
| Nicholas | 26,562 | 26,213 | -349 | -1.3% |
| Ohio | 47,433 | 44,015 | -3,418 | -7.2% |
| Pendleton | 8,196 | 7,390 | -806 | -9.8% |
| Pleasants | 7,514 | 7,364 | -150 | -2.0% |
| Pocahontas | 9,131 | 8,418 | -713 | -7.8% |
| Preston | 29,330 | 30,247 | 917 | 3.1% |
| Putnam | 51,586 | 55,673 | 4,087 | 7.9% |
| Raleigh | 79,220 | 79,187 | -33 | 0.0% |
| Randolph | 28,262 | 28,390 | 128 | 0.5% |
| Ritchie | 10,343 | 10,208 | -135 | -1.3% |
| Roane | 15,443 | 14,870 | -573 | -3.7% |
| Summers | 14,388 | 13,081 | -1,307 | -9.1% |
| Taylor | 16,089 | 16,328 | 239 | 1.5% |
| Tucker | 7,321 | 6,812 | -509 | -7.0% |
| Tyler | 9,592 | 8,680 | -912 | -9.5% |
| Upshur | 23,404 | 23,806 | 402 | 1.7% |
| Wayne | 42,903 | 41,119 | -1,784 | -4.2% |
| Webster | 9,719 | 9,444 | -275 | -2.8% |
| Wetzel | 17,693 | 16,226 | -1,467 | -8.3% |
| Wirt | 5,873 | 5,605 | -268 | -4.6% |
| Wood | 87,981 | 86,888 | -1,093 | -1.2% |
| Wyoming | 25,708 | 23,304 | -2,404 | -9.4% |
