Founded in 1798, Union County is one of 46 counties in the state of South Carolina. Historically, Union County was formed from Ninety-Six District. The city of Union is the county seat. With FIPS code of 87, Union County has a population of 27,016 and area of 516 square miles (1,336 km2).
List of all cities in Union County, SC alphabetically
| City/Town | Postal Code | Area Code |
| Buffalo, SC | 29321 | 864 |
| Carlisle, SC | 29031 | 803 |
| Disney Direct Marketing, SC | 29395 | 864 |
| Jonesville, SC | 29353 | 864 |
| Jonesville, SC | 29395 | 864 |
| Kelton, SC | 29353 | 864 |
| Leeds, SC | 29031 | 803 |
| Lockhart, SC | 29364 | 864 |
| Tuckertown, SC | 29031 | 803 |
| Union, SC | 29379 | 864 |