Founded in 1842, Union County is one of 100 counties in the state of North Carolina. Historically, Union County was formed from Anson County and Mecklenburg County. The city of Monroe is the county seat. With FIPS code of 179, Union County has a population of 243,648 and area of 640 square miles (1,658 km2).
List of all cities in Union County, NC alphabetically
| City/Town | Postal Code | Area Code |
| Hemby, NC | 28079 | 704/980 |
| Hemby Bridge, NC | 28079 | 704/980 |
| Indian Trail, NC | 28079 | 704/980 |
| Indian Trl, NC | 28079 | 704/980 |
| Lake Park, NC | 28079 | 704/980 |
| Marshville, NC | 28103 | 704/980 |
| Marvin, NC | 28173 | 704/980 |
| Matthews, NC | 28104 | 704/980 |
| Mineral Springs, NC | 28108 | 704/980 |
| Monroe, NC | 28110 | 704/980 |
| 28111 | 704/980 | |
| 28112 | 704/980 | |
| Olive Branch, NC | 28103 | 704/980 |
| Stallings, NC | 28104 | 704/980 |
| Waxhaw, NC | 28173 | 704/980 |
| Weddington, NC | 28104 | 704/980 |
| Wesley Chapel, NC | 28104 | 704/980 |
| Wingate, NC | 28174 | 704/980 |