In 2021, Plymouth County, IA had a population of 25.5k people with a median age of 40.4 and a median household income of $74,239. Between 2020 and 2021 the population of Plymouth County, IA grew from 25,141 to 25,543, a 1.6% increase and its median household income grew from $71,147 to $74,239, a 4.35% increase.
The 5 largest ethnic groups in Plymouth County, IA are White (Non-Hispanic) (90.6%), White (Hispanic) (3%), Other (Hispanic) (2.16%), Black or African American (Non-Hispanic) (1.63%), and Two+ (Non-Hispanic) (1.06%).
None of the households in Plymouth 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.
97.4% of the residents in Plymouth County, IA are U.S. citizens.
In 2021, the median property value in Plymouth County, IA was $176,800, and the homeownership rate was 76.2%.
Most people in Plymouth County, IA drove alone to work, and the average commute time was 18.7 minutes. The average car ownership in Plymouth County, IA was 2 cars per household.
Plymouth County, IA borders Cherokee County, IA, O'Brien County, IA, Sioux County, IA, Woodbury County, IA, and Union County, SD.