In 2023, O'Brien County, IA had a population of 14.1k people with a median age of 39.8 and a median household income of $68,216. Between 2022 and 2023 the population of O'Brien County, IA declined from 14,138 to 14,103, a −0.248% decrease and its median household income grew from $65,076 to $68,216, a 4.83% increase.
The 5 largest ethnic groups in O'Brien County, IA are White (Non-Hispanic) (88.5%), Two+ (Hispanic) (3.03%), Other (Hispanic) (2.6%), Two+ (Non-Hispanic) (1.79%), and White (Hispanic) (1.38%).
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.
97.3% of the residents in O'Brien County, IA are U.S. citizens.
In 2023, the median property value in O'Brien County, IA was $158,900, and the homeownership rate was 77.3%.
Most people in O'Brien County, IA drove alone to work, and the average commute time was 18.4 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.