Tampico is a village located in Tampico Township, Whiteside County, Illinois, United States. As of the 2010 census the village had a total population of 790, up from 772 at the 2000 census. U.S. President Ronald Reagan was born there and lived there for two brief periods of his childhood.
Tampico is located at 41°37′50″N 89°47′07″W / 41.63056°N 89.78528°W / 41.63056; -89.78528 (41.6304686 -89.7853130). Its elevation is 640 ft (200 m).
According to the United States Census Bureau, the village has a total area of 0.4 sq mi (1.0 km2), of which, 0.4 sq mi (1.0 km2) of it is land and none of it is covered by water. About a 1 mi (1.6 km) to the east of Tampico is the Hennepin Canal feeder.