In 2022, O'Brien County, IA had a population of 14.1k people with a median age of 40.4 and a median household income of $65,076. Between 2021 and 2022 the population of O'Brien County, IA declined from 14,139 to 14,138, a −0.00707% decrease and its median household income grew from $62,292 to $65,076, a 4.47% increase.
The 5 largest ethnic groups in O'Brien County, IA are White (Non-Hispanic) (90.4%), Two+ (Hispanic) (2.98%), Other (Hispanic) (1.58%), Two+ (Non-Hispanic) (1.56%), and Black or African American (Non-Hispanic) (1.39%).
None of the households in O'Brien County, IA reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
97.8% of the residents in O'Brien County, IA are U.S. citizens.
In 2022, the median property value in O'Brien County, IA was $141,900, and the homeownership rate was 76%.
Most people in O'Brien County, IA drove alone to work, and the average commute time was 17 minutes. The average car ownership in O'Brien County, IA was 2 cars per household.
O'Brien County, IA borders Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Lyon County, IA, Osceola County, IA, Plymouth County, IA, and Sioux County, IA.