Andover Map
Andover is a village in Henry County, Illinois, United States. The population was 578 at the 2010 census, down from 594 at the 2000 census.
Andover is located at 41°17?42?N 90°17?26?W / 41.295°N 90.29056°W / 41.295; -90.29056 (41.295011, -90.290658).
According to the United States Census Bureau, the village has a total area of 1.0 square miles (2.6 km²), all of it land.
Nearby cities include Bishop Hill, Sherrard, Geneseo, Coal Valley, Colona.