Taylorville is a city in Christian County, Illinois, United States. The population was 11,246 at the 2010 census. It is the county seat and largest city in Christian County.
Taylorville is located at 39°32′27″N 89°17′17″W / 39.54083°N 89.28806°W / 39.54083; -89.28806 (39.540768, -89.288005).
According to the United States Census Bureau, the city has a total area of 10.1 square miles (26.0 km²), of which, 8.1 square miles (20.9 km²) of it is land and 2.0 square miles (5.1 km²) of it (19.46%) is water.