In 2023, Boulder Hill, IL had a population of 9.13k people with a median age of 36.8 and a median household income of $76,935. Between 2022 and 2023 the population of Boulder Hill, IL declined from 9,547 to 9,127, a −4.4% decrease and its median household income grew from $76,875 to $76,935, a 0.078% increase.
The 5 largest ethnic groups in Boulder Hill, IL are White (Non-Hispanic) (51.7%), Two+ (Hispanic) (14.4%), Other (Hispanic) (14.2%), White (Hispanic) (11.5%), and Two+ (Non-Hispanic) (2.64%).
None of the households in Boulder Hill, 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.
91.5% of the residents in Boulder Hill, IL are U.S. citizens.
In 2023, the median property value in Boulder Hill, IL was $233,100, and the homeownership rate was 83%.
Most people in Boulder Hill, IL drove alone to work, and the average commute time was 28.8 minutes. The average car ownership in Boulder Hill, IL was 2 cars per household.