O'Brien County

County in Iowa, United States of America, North America

O'Brien County is a county in Iowa, United States. The population in O'Brien County was 14,060 in 2022. The median age in O'Brien County was 40.7 in 2021. The median income in O'Brien County was $30,742 in 2021. The unemployment rate in O'Brien County was 2.2% in 2023. The percentage of people with obesity in O'Brien County was 36.8% in 2021. The percentage of people who binge drink in O'Brien County was 21% in 2021. The percentage of people who smoke in O'Brien County was 18.7% in 2021.