Post Offices List in Glenwood City, Illinois:
| Glenwood Post Office | 19 W Main St, Glenwood, IL 60425 |
| Tri City Carrier Annex Post Office | 701 W Holbrook Rd, Glenwood, IL 60425 |
| Glenwood Post Office | 19 W Main St, Glenwood, IL 60425 |
| Tri City Carrier Annex Post Office | 701 W Holbrook Rd, Glenwood, IL 60425 |