Resident Population in Iowa was 3207.00400 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Iowa reached a record high of 3207.00400 in January of 2023 and a record low of 2211.00000 in January of 1905. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Iowa - last updated from the United States Federal Reserve on March of 2024.