| Oak Ridge, TN (City) |
| Oak Ridge, MO (Town) |
| Oak Ridge, NC (Town) |
| Oak Ridge North, TX (City) |
| Oak Run Township, OH (Township) |
| Oak Township, IA (Township) |
| Oak Valley, TX (Town) |
| Oak Valley, ND (Township) |
| Oak Valley, KS (Township) |
| Oak Valley, MN (Township) |
| Oakboro, NC (Town) |
| Oakbrook Terrace, IL (City) |
| Oakdale, IL (Village) |
| Oakdale, MN (City) |
| Oakdale, CA (City) |
