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The total population of O Brien County is estimated to be 14,138 with 7,007 males (49.56%) and 7,131 females (50.44%). There are 124 more females than males in O Brien County.
The median household income in O Brien County was $67,332 in 2021, which marked an an increase of 2,516(3.88%) from $64,816 in 2020. This income is 90.25% of the U.S. median household income of $74,606 (all incomes in 2022 inflation-adjusted dollars).
Per the latest American Community Survey by the Census Bureau, O Brien County sees its highest median household income among householders in the age group of 45 to 64 years old, at $90,105. Overall, the median household income for the county of O Brien County stands at $67,332.
In O Brien County, the median income for all workers aged 15 years and older, regardless of work hours, was $48,161 for males and $23,659 for females. However, when specifically considering full-time, year-round workers within the same age group, the median income was $60,102 for males and $40,794 for females.
In O Brien County, the demographic landscape is diverse, spanning 5 distinct racial categories among households. Among these, White households have the highest median household income at $70,320, while Black or African American households represent the opposite end with the lowest median household income of $12,300.
In 2022, the population of O Brien County was 14,060, a 0.01% decrease year-by-year from 2021. Previously, in 2021, O Brien County's population was 14,062, a decline of 0.65% compared to a population of 14,154 in 2020.
The median age in O Brien County, IA is 40.7, as per 2021 ACS 5-Year Estimates. Of the total population, 19.92% were under the age of 15, 17.89% aged 15 to 29, 41.89% aged 30 to 64, 15.72% aged 65 to 84, and 4.57% were 85 years of age and older.
Racial distribution of O Brien County population: 92.89% are White, 1.61% are Black or African American, 0.43% are American Indian and Alaska Native, 0.66% are Asian, 2.32% are some other race and 2.09% are multiracial.