Demographics & People — Lake Zurich, Illinois

Population Overview

Population (Census)19,727
Estimated 2026~20,100
Median Age40.3
Total Households7,329
Family Households5,645
Average Household Size2.66
Diversity Index0.249 (somewhat diverse)

Race & Ethnicity

White16,627
Black or African American102
Asian1,838
Hispanic or Latino756

Heritage & Ancestry

GroupCount
German4,255
Unclassified or not reported4,136
Irish3,289
Other groups3,264
Polish2,183
Italian1,681
English1,271
American1,112
Hispanic: Hispanic or Latino630
Russian539

Language

English Only14,827
Spanish578
Population 5+18,666

Veterans

Veterans645
Population 18+15,193

Commuting

Mean Commute Time27.6 minutes
Work from Home21.8%
Commuter ProfileN/A
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Lake Zurich, Illinois.