In 2021, Rock Island County, IL had a population of 145k people with a median age of 40.1 and a median household income of $58,974. Between 2020 and 2021 the population of Rock Island County, IL grew from 142,801 to 144,694, a 1.33% increase and its median household income grew from $55,980 to $58,974, a 5.35% increase.
The 5 largest ethnic groups in Rock Island County, IL are White (Non-Hispanic) (70.6%), Black or African American (Non-Hispanic) (10.2%), White (Hispanic) (6.54%), Other (Hispanic) (3.23%), and Two+ (Non-Hispanic) (3.05%).
None of the households in Rock Island County, IL 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.
95.3% of the residents in Rock Island County, IL are U.S. citizens.
The largest universities in Rock Island County, IL are Black Hawk College (920 degrees awarded in 2021), Augustana College (914 degrees), and Trinity College of Nursing & Health Sciences (85 degrees).
In 2021, the median property value in Rock Island County, IL was $125,200, and the homeownership rate was 67.8%.
Most people in Rock Island County, IL drove alone to work, and the average commute time was 19.9 minutes. The average car ownership in Rock Island County, IL was 2 cars per household.