Resident Population in Lucas County, IA was 8.74700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Lucas County, IA reached a record high of 10.40000 in January of 1972 and a record low of 8.53700 in January of 2017. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Lucas County, IA - last updated from the United States Federal Reserve on May of 2024.