Post Offices List in Lockport City, Illinois:
| Lockport Post Office | 1059 E 9th St, Lockport, IL 60441 |
| Lockport Carrier Annex Post Office | 954 E 9th St, Lockport, IL 60441 |
| Lockport Post Office | 1059 E 9th St, Lockport, IL 60441 |
| Lockport Carrier Annex Post Office | 954 E 9th St, Lockport, IL 60441 |