In 2022, Grundy County, IA had a population of 12.4k people with a median age of 41.6 and a median household income of $80,701. Between 2021 and 2022 the population of Grundy County, IA grew from 12,336 to 12,351, a 0.122% increase and its median household income grew from $74,552 to $80,701, a 8.25% increase.
The 5 largest ethnic groups in Grundy County, IA are White (Non-Hispanic) (95.4%), Two+ (Non-Hispanic) (1%), White (Hispanic) (0.899%), Black or African American (Non-Hispanic) (0.842%), and Two+ (Hispanic) (0.599%).
None of the households in Grundy 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.
99.2% of the residents in Grundy County, IA are U.S. citizens.
In 2022, the median property value in Grundy County, IA was $166,300, and the homeownership rate was 83.3%.
Most people in Grundy County, IA drove alone to work, and the average commute time was 22.5 minutes. The average car ownership in Grundy County, IA was 2 cars per household.
Grundy County, IA borders Black Hawk County, IA, Butler County, IA, Franklin County, IA, Hardin County, IA, Marshall County, IA, and Tama County, IA.