Post Offices List in Portsmouth City, Ohio:
| Portsmouth Post Office | 610 Gay St, Portsmouth, OH 45662 |
| Sciotoville Post Office | 423 Harding Ave, Portsmouth, OH 45662 |
| Portsmouth Post Office | 610 Gay St, Portsmouth, OH 45662 |
| Sciotoville Post Office | 423 Harding Ave, Portsmouth, OH 45662 |