Irwinton is a city in Wilkinson County, Georgia, United States. The population was 583 at the 2010 census. The city is the county seat of Wilkinson County.
Irwinton is located at 32°48′43″N 83°10′36″W / 32.81194°N 83.17667°W / 32.81194; -83.17667 (32.812075, -83.176800).
According to the United States Census Bureau, the city has a total area of 3.15 square miles (8.2 km²), all of it land.