Founded in 1818, Irwin County is one of 159 counties in the state of Georgia. Historically, Irwin County was formed from Creek Cessions of 1814 and 1818. The city of Ocilla is the county seat. With FIPS code of 155, Irwin County has a population of 9,618 and area of 357 square miles (925 km2).
List of all cities in Irwin County, GA alphabetically
| City/Town | Postal Code | Area Code |
| Irwinville, GA | 31760 | 229 |
| Mystic, GA | 31769 | 229 |
| Ocilla, GA | 31774 | 229 |
| Wray, GA | 31798 | 229 |
Map of Cities in Irwin County, GA
