Thomasville is the county seat of Thomas County, Georgia, United States. The city is the second largest in Southwest Georgia after Albany.The city deems itself the City of Roses and holds an annual Rose Festival. The town features plantations open to the public, a historic downtown, a large farmer's market, and a 320 year old oak tree at the corner of Monroe and Crawford streets. The population was 19,437 at the 2009 census estimate.