Founded in 1812, Gallatin County is one of 102 counties in the state of Illinois. Historically, Gallatin County was formed from Randolph County. The city of Shawneetown is the county seat. With FIPS code of 59, Gallatin County has a population of 4,903 and area of 322 square miles (834 km2).
List of all cities in Gallatin County, IL alphabetically
| City/Town | Postal Code | Area Code |
| Asbury, IL | 62871 | 618/730 |
| Bowlesville, IL | 62984 | 618/730 |
| Elba, IL | 62871 | 618/730 |
| Equality, IL | 62934 | 618/730 |
| Gold Hill, IL | 62984 | 618/730 |
| Junction, IL | 62954 | 618/730 |
| New Haven, IL | 62867 | 618/730 |
| North Fork, IL | 62979 | 618/730 |
| Old Shawneetown, IL | 62984 | 618/730 |
| Omaha, IL | 62871 | 618/730 |
| Ridgway, IL | 62979 | 618/730 |
| Shawnee, IL | 62984 | 618/730 |
| Shawneetown, IL | 62984 | 618/730 |