Resident Population in Pottawattamie County, IA was 93.52900 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Pottawattamie County, IA reached a record high of 93.65700 in January of 2015 and a record low of 82.69700 in January of 1990. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Pottawattamie County, IA - last updated from the United States Federal Reserve on April of 2026.