Tampico is a village located in Tampico Township, Whiteside County, Illinois, United States next to Rock Falls and Sterling, Illinois. As of the 2010 census the village had a total population of 790, up from 772 at the 2000 census. It is known as the birthplace of Ronald Reagan, the 40th President of the United States.

Whiteside County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 55,691. Its county seat is Morrison. The county is bounded on the west by the Mississippi River. Whiteside County comprises the Sterling, IL Micropolitan Statistical Area, which is also included in the Dixon-Sterling, IL Combined Statistical Area. U.S. President Ronald Reagan was born in 1911 in the Whiteside County community of Tampico.