Agency is a city in Wapello County, Iowa, United States.

[3] It is the historic site of an Indian trading post and the grave of Chief Wapello.

An Indian agency was established here in 1838 and operated until the local tribes were moved to Kansas.

Chief Wapello is buried next to his good friend General Joseph M. Street, and his family.

[5] On April 11, 2001, an F2 tornado ripped through Agency destroying or damaging dozens of structures.

[6] According to the United States Census Bureau, the city has a total area of 0.65 square miles (1.68 km2), all land.

27.8% of all households were made up of individuals, and 12.7% had someone living alone who was 65 years of age or older.

The racial makeup of the city was 99.20% White, 0.16% African American, 0.48% Asian, 0.16% from other races.

31.6% of all households were made up of individuals, and 17.6% had someone living alone who was 65 years of age or older.