About This Place
Deer Grove is a village in Whiteside County, Illinois, United States. The population was 45 at the 2010 census, down from 48 at the 2000 census.
Deer Grove is located at 41Â°36â²28â³N 89Â°41â²30â³W / 41.60778Â°N 89.69167Â°W / 41.60778; -89.69167 (41.607822, -89.691534).
According to the United States Census Bureau, the village has a total area of 0.5 square miles (1.2 kmÂ²), all of it land.