Blandinsville is a village in McDonough County, Illinois, United States. The population was 777 at the 2000 census.
Blandinsville is located at 40°33′17″N 90°51′57″W / 40.55472°N 90.86583°W / 40.55472; -90.86583 (40.554794, -90.865703).
According to the United States Census Bureau, the village has a total area of 0.9 square miles (2.3 km²), all of it land. Twin Oaks Golf course is on the western edge of town.