Soperton Depot Soperton's former Macon, Dublin & Savannah depot has served as city hall since 1972. The rail line through town is now operated by shortline Georgia Central Railway. The county seat of Treutlen County in east central Georgia, Soperton is a town of 5500 people.   Georgia's Railroad History & Heritage. Copyright, Steve Storey. Railroad History | The Depot List | Locomotives On Display | Odds & Ends | Sources & References | Home