Council Bluffs is a city in and the county seat of Pottawattamie County, Iowa, United States. The population was 62,799 at the 2020 census, making it the state's tenth most populous city, and the most populous city in Southwest Iowa. The Omaha metropolitan region of which Council Bluffs is a part, is the 58th largest in the United States, with an estimated population of 983,969. It is located on the east bank of the Missouri River, across from Omaha, Nebraska.