| Locality | Post Code |
|---|---|
| Adamsville, Harrison | 26431 |
| Anmoore, Harrison | 26323 |
| Bridgeport, Harrison | 26330 |
| Bristol, Harrison | 26426 |
| Brushy Fork, Harrison | 26330 |
| Clarksburg, Harrison | 26301, 26306 |
| Country Club, Harrison | 26301 |
| Craigmoore, Harrison | 26408 |
| Dawmont, Harrison | 26301 |
| Dola, Harrison | 26386 |
| Enterprise, Harrison | 26568 |
| Francis Mine, Harrison | 26431 |
| Gypsy, Harrison | 26361 |
| Haywood, Harrison | 26366 |
| Hepzibah, Harrison | 26369 |
| Industrial, Harrison | 26426 |
| Lake Ridge, Harrison | 26330 |
| Laurel Park, Harrison | 26301 |
| Laurel Valley, Harrison | 26301 |
| Lost Creek, Harrison | 26385 |
| Lumberport, Harrison | 26386 |
| Maple Lake, Harrison | 26330 |
| McWhorter, Harrison | 26385 |
| Meadowbrook, Harrison | 26404 |
| Mount Clare, Harrison | 26408 |
| Nutter Fort, Harrison | 26301 |