East Peru is a city in Madison County, Iowa, United States. The population was 115 at the time of the 2020 census. It is part of the Des Moines–…East Peru is a city in Madison County, Iowa, United States. The population was 115 at the time of the 2020 census. It is part of the Des Moines–West Des Moines Metropolitan Statistical Area. East Peru had its start in the year 1887 by the building of the railroad through that territory.