| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| O'Brien historical | city | West Virginia | United States | 39.05222 | -80.03139 | 1945 | 1705 |
| O'Brion | city | West Virginia | United States | 38.57528 | -80.96194 | 892 | 1309 |
| O'Neill | city | West Virginia | United States | 39.29306 | -80.41139 | 1197 | 14845 |
| Oak Acres | city | West Virginia | United States | 39.22222 | -81.68167 | 774 | 6372 |
| Oak Drive Subdivision | city | West Virginia | United States | 38.81833 | -81.36389 | 898 | 4545 |
| Oak Flat | city | West Virginia | United States | 38.65944 | -79.21306 | 1555 | 496 |
| Oak Grove | city | West Virginia | United States | 37.38722 | -81.06361 | 2467 | 13072 |
| Oak Grove | city | West Virginia | United States | 38.62583 | -79.355 | 1998 | 743 |
| Oak Grove historical | city | West Virginia | United States | 39.44667 | -80.29278 | 1026 | 7130 |
| Oak Hill | city | West Virginia | United States | 38.79139 | -81.71 | 800 | 3138 |
| Oak Hill | city | West Virginia | United States | 37.97222 | -81.14889 | 1889 | 11270 |
| Oak Hill | city | West Virginia | United States | 38.92222 | -81.01861 | 971 | 1138 |
| Oak Hill | city | West Virginia | United States | 39.13667 | -79.1525 | 1430 | 732 |
| Oak Hill Junction | city | West Virginia | United States | 37.98222 | -81.17444 | 1899 | 8715 |
| Oak Ridge | city | West Virginia | United States | 38.075 | -81.10972 | 1601 | 5901 |
| Oak historical | city | West Virginia | United States | 39.13194 | -81.69667 | 757 | 1884 |
| Oakbrook | city | West Virginia | United States | 39.18056 | -81.52083 | 725 | 11823 |
| Oakdale | city | West Virginia | United States | 39.44917 | -80.39611 | 1197 | 3178 |
| Oakland | city | West Virginia | United States | 38.17306 | -81.30472 | 688 | 3448 |
| Oakland | city | West Virginia | United States | 39.48111 | -78.25194 | 800 | 1900 |
| Oakmont | city | West Virginia | United States | 40.06222 | -80.67667 | 698 | 46261 |
| Oakmont | city | West Virginia | United States | 39.36667 | -79.18861 | 2125 | 1660 |
| Oakmont Hills | city | West Virginia | United States | 40.0675 | -80.67222 | 898 | 46261 |
| Oakton | city | West Virginia | United States | 38.48778 | -81.0475 | 843 | 1376 |
| Oakvale | city | West Virginia | United States | 37.33417 | -80.96278 | 1971 | 2505 |
| Oakview | city | West Virginia | United States | 39.66667 | -79.97056 | 1040 | 28020 |
| Oakview Heights | city | West Virginia | United States | 38.39111 | -82.58278 | 656 | 22648 |
| Oakwood | city | West Virginia | United States | 38.34222 | -81.66389 | 928 | 58032 |
| Oakwood Estates | city | West Virginia | United States | 38.45194 | -81.92194 | 698 | 16409 |
| Oakwood Estates | city | West Virginia | United States | 39.29528 | -81.45417 | 797 | 6885 |
| Oceana | city | West Virginia | United States | 37.69194 | -81.62417 | 1315 | 3187 |
| Odaville | city | West Virginia | United States | 38.9325 | -81.64083 | 797 | 1627 |
| Odd | city | West Virginia | United States | 37.59333 | -81.19417 | 2933 | 2271 |
| Odell | city | West Virginia | United States | 38.39028 | -81.36556 | 1000 | 3688 |
| Odell Town | city | West Virginia | United States | 38.19778 | -80.71361 | 2598 | 2090 |
| Odessa | city | West Virginia | United States | 38.42861 | -81.23806 | 1017 | 1674 |
| Ogden | city | West Virginia | United States | 39.30167 | -81.40222 | 800 | 5983 |
| Ogden | city | West Virginia | United States | 37.97694 | -81.12917 | 1899 | 11270 |
| Ohley | city | West Virginia | United States | 38.10694 | -81.44917 | 915 | 3410 |
| Oil Spring | city | West Virginia | United States | 39.22222 | -81.28861 | 997 | 1941 |
| Oilville | city | West Virginia | United States | 37.72778 | -82.03722 | 1719 | 4189 |
| Oka | city | West Virginia | United States | 38.65611 | -81.13667 | 997 | 1153 |
| Okonoko | city | West Virginia | United States | 39.52306 | -78.52556 | 721 | 959 |
| Olcott | city | West Virginia | United States | 38.23444 | -81.72444 | 862 | 3206 |
| Old Fields | city | West Virginia | United States | 39.13472 | -78.95 | 800 | 712 |
| Old Gauley | city | West Virginia | United States | 38.15611 | -81.19194 | 767 | 3995 |
| Old Mill Village | city | West Virginia | United States | 37.77278 | -81.21806 | 2339 | 27112 |
| Oldtown historical | city | West Virginia | United States | 38.90083 | -82.08028 | 590 | 5134 |
| Olive | city | West Virginia | United States | 39.34778 | -80.45889 | 997 | 2316 |
| Olive | city | West Virginia | United States | 38.56361 | -79.82028 | 3280 | 397 |
| Omar | city | West Virginia | United States | 37.75556 | -81.99972 | 931 | 3776 |
| Ona | city | West Virginia | United States | 38.42472 | -82.21333 | 767 | 6251 |
| Onego | city | West Virginia | United States | 38.84778 | -79.42222 | 1899 | 411 |
| Onie historical | city | West Virginia | United States | 39.61972 | -80.63111 | 1397 | 1204 |
| Onoto | city | West Virginia | United States | 38.27111 | -80.10694 | 2424 | 484 |
| Opal | city | West Virginia | United States | 38.38667 | -80.76639 | 2089 | 978 |
| Opekiska | city | West Virginia | United States | 39.55722 | -80.05583 | 1069 | 5116 |
| Ophelia historical | city | West Virginia | United States | 38.20917 | -80.72 | 2700 | 2344 |
| Oral Lake | city | West Virginia | United States | 39.27528 | -80.21583 | 997 | 10200 |
| Oreide | city | West Virginia | United States | 39.36111 | -80.2 | 1174 | 6641 |
| Organ Cave | city | West Virginia | United States | 37.71278 | -80.44139 | 2283 | 3176 |
| Orgas | city | West Virginia | United States | 38.05833 | -81.5725 | 1095 | 2374 |
| Orient Hill | city | West Virginia | United States | 38.02806 | -80.72611 | 2936 | 1793 |
| Oriole historical | city | West Virginia | United States | 39.43194 | -79.79861 | 1597 | 3014 |
| Orlando | city | West Virginia | United States | 38.87111 | -80.59389 | 1158 | 896 |
| Orleans Cross Roads | city | West Virginia | United States | 39.62444 | -78.37944 | 498 | 1116 |
| Orma | city | West Virginia | United States | 38.74806 | -81.1 | 892 | 1150 |
| Orndoff | city | West Virginia | United States | 38.5375 | -80.42444 | 2181 | 878 |
| Orr | city | West Virginia | United States | 38.93972 | -80.05389 | 2299 | 1067 |
| Orr | city | West Virginia | United States | 39.55333 | -79.52861 | 2539 | 1804 |
| Ortin Heights | city | West Virginia | United States | 38.4475 | -81.81806 | 830 | 29018 |
| Orton | city | West Virginia | United States | 38.835 | -80.92861 | 1059 | 719 |
| Orville | city | West Virginia | United States | 37.81417 | -81.89222 | 997 | 3946 |
| Osage | city | West Virginia | United States | 39.65861 | -80.00778 | 1138 | 19651 |
| Osborne | city | West Virginia | United States | 38.49917 | -81.34861 | 846 | 3402 |
| Osbornes Mills | city | West Virginia | United States | 38.54417 | -81.30806 | 754 | 1573 |
| Oscar | city | West Virginia | United States | 38.05861 | -80.36778 | 2611 | 690 |
| Osceola | city | West Virginia | United States | 38.71389 | -79.63361 | 3599 | 405 |
| Osgood | city | West Virginia | United States | 39.56667 | -80.07722 | 997 | 5116 |
| Ossia | city | West Virginia | United States | 38.58889 | -81.02694 | 1279 | 1292 |
| Oswald historical | city | West Virginia | United States | 37.86028 | -81.1725 | 2050 | 14992 |
| Otsego | city | West Virginia | United States | 37.6125 | -81.37556 | 1610 | 2293 |
| Ottawa | city | West Virginia | United States | 37.95861 | -81.81667 | 1108 | 3662 |
| Otto | city | West Virginia | United States | 38.75222 | -81.22111 | 810 | 1144 |
| Ovapa | city | West Virginia | United States | 38.52139 | -81.14889 | 1003 | 1300 |
| Overfield | city | West Virginia | United States | 39.16917 | -80.20444 | 1295 | 1902 |
| Overhill | city | West Virginia | United States | 38.96194 | -80.15167 | 1820 | 2523 |
| Owens Crossing | city | West Virginia | United States | 38.35139 | -82.27333 | 692 | 9261 |
| Owings | city | West Virginia | United States | 39.37944 | -80.25917 | 1197 | 7957 |
| Oxbow | city | West Virginia | United States | 39.09389 | -81.21167 | 800 | 680 |
| Oxford | city | West Virginia | United States | 39.20556 | -80.865 | 895 | 1469 |
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