Vidalia is a city in Toombs and very slightly into Montgomery counties in the U.S. state of Georgia. As of the 2000 census, the city population was 10,491. It is the largest city in Toombs, but is not the county seat. Like so many towns in the region, it grew up around a train depot that serviced farmers in the area who grew such crops as pecans and tobacco. The famous sweet onions were not an important crop until much later.