Wapello County, Iowa

Wapello County ( ) is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 35,437. The county seat and the largest city is Ottumwa. The county was formed on February 17, 1843, and named for Wapello, a Meskwaki chief.

Wapello County is included in the Ottumwa, IA Micropolitan statistical area.