Post Offices List in Harwood Heights City, Illinois:
| Harwood Heights Post Office | 7101 W Gunnison St, Harwood Heights, IL 60706 |
| Harwood Heights Carrier Anx Post Office | 7350 W Agatite Ave, Harwood Heights, IL 60706 |
| Harwood Heights Post Office | 7101 W Gunnison St, Harwood Heights, IL 60706 |
| Harwood Heights Carrier Anx Post Office | 7350 W Agatite Ave, Harwood Heights, IL 60706 |