In 2020, Rock County, WI had a population of 163k people with a median age of 39.8 and a median household income of $59,519. Between 2019 and 2020 the population of Rock County, WI grew from 162,152 to 162,532, a 0.234% increase and its median household income grew from $57,875 to $59,519, a 2.84% increase.
The 5 largest ethnic groups in Rock County, WI are White (Non-Hispanic) (81.9%), Black or African American (Non-Hispanic) (4.59%), Other (Hispanic) (4.27%), White (Hispanic) (3.54%), and Two+ (Non-Hispanic) (2.87%).
None of the households in Rock County, WI 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 Rock County, WI are U.S. citizens.
The largest universities in Rock County, WI are Blackhawk Technical College (621 degrees awarded in 2020), Beloit College (410 degrees), and First Class Cosmetology School (43 degrees).
In 2020, the median property value in Rock County, WI was $156,800, and the homeownership rate was 68.4%.
Most people in Rock County, WI drove alone to work, and the average commute time was 23.2 minutes. The average car ownership in Rock County, WI was 2 cars per household.
Rock County, WI borders Boone County, IL, Winnebago County, IL, Dane County, WI, Green County, WI, Jefferson County, WI, and Walworth County, WI.