Andalusia Township is located in Rock Island County, Illinois. As of the 2010 census, its population was 2,299 and it contained 920 housing units. Andalusia Township was formed from Edgington Township in September, 1858.

Geography

According to the 2010 census, the township has a total area of 15.46 square miles (40.0 km), of which 12.81 square miles (33.2 km) (or 82.86%) is land and 2.65 square miles (6.9 km) (or 17.14%) is water.

Demographics

Historical population

Census	Pop.	Note	%±
2016 (est.)	2,281
U.S. Decennial Census