Unemployment Rate in O'Brien County, IA was 2.40% in December of 2025, according to the United States Federal Reserve. Historically, Unemployment Rate in O'Brien County, IA reached a record high of 7.10 in April of 2020 and a record low of 1.40 in June of 1990. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in O'Brien County, IA - last updated from the United States Federal Reserve on April of 2026.