Post Offices List in Union County, North Carolina:
| Indian Trail Post Office | 210 Postage Way, Indian Trail, NC 28079 |
| Marshville Post Office | 322 E Union St, Marshville, NC 28103 |
| Monroe Post Office | 101 S Charlotte Ave, Monroe, NC 28112 |
| Waxhaw Post Office | 100 Waxhaw Pkwy, Waxhaw, NC 28173 |
| Wingate Post Office | 212 N Main St, Wingate, NC 28174 |
| Mineral Springs Post Office | 5912 Waxhaw Hwy, Mineral Springs, NC 28108 |
| Monroe Annex Post Office | 1639 Dickerson Blvd, Monroe, NC 28110 |