Pillager is a city in Cass County, Minnesota, United States. The population was 469 at the 2010 census. It is part of the Brainerd Micropolitan Statistical Area. Pillager is located in Sylvan Township (T133N R30W), on the left (North) bank of the Crow Wing River, just East of Lake Placid. According to the United States Census Bureau, it has a total area of 0.7 square miles (1.7 km²), of which, 0.6 square miles (1.7 km²) of it is land and 0.04 square miles (0.1 km²) of it (4.48%) is water.