Thorsby is a town in Chilton County, Alabama, United States. As of the 2000 census, the population of the town was 1,820. The town mayor is Dearl Hilyer. ==Geography== Thorsby is located at 32°55'1.171" North, 86°42'57.442" West (32.916992, -86.715956). According to the U.S. Census Bureau, the town has a total area of 5.2 square miles (13 km), of which, 5.1 square miles (13 km) of it is land and 0.04 square miles (0.10 km) of it is water. The total area is 80.58% water.