| Locality | Post Code |
|---|---|
| Auburn, Ritchie | 26325 |
| Berea, Ritchie | 26327 |
| Burnt House, Ritchie | 26178 |
| Cairo, Ritchie | 26337 |
| Ellenboro, Ritchie | 26346 |
| Greenwood, Ritchie | 26415 |
| Harrisville, Ritchie | 26362 |
| Hazelgreen, Ritchie | 26362 |
| Highland, Ritchie | 26346 |
| Macfarlan, Ritchie | 26148 |
| Mahone, Ritchie | 26362 |
| Mountain, Ritchie | 26415 |
| Newberne, Ritchie | 26362 |
| Pennsboro, Ritchie | 26415 |
| Petroleum, Ritchie | 26161 |
| Pullman, Ritchie | 26421 |
| Smithville, Ritchie | 26178 |
| Toll Gate, Ritchie | 26415 |