Milledgeville is a village in Carroll County, Illinois, United States. The population of the village was 1,032 at the 2010 census, up from 1,016 at the 2000 census. The population of everyone residing under the 61051 zip code was 1,638 at the 2000 census. The town was named for the mill at the edge of the village.
Milledgeville is located at 41°57′50″N 89°46′28″W / 41.96389°N 89.77444°W / 41.96389; -89.77444 (41.963763, -89.774372).
According to the United States Census Bureau, the village has a total area of 0.7 square miles (1.8 km²), all of it land.