Willow Lake CDP, IL Population By Ancestry in 2021 (ACS-5Yrs)

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, among the 795 Willow Lake CDP, IL population, 327 had German ancestry (41.13%), 244 had Unclassified ancestry (30.69%), and 114 had English ancestry (14.34%).

The chart below shows the top 10 ancestry groups, and the table below shows both the population and percentages for many ancestry groups.

You can also see similar information for other Illinois cities and places, and for Illinois.

NB: People could belong to one or more ancestry groups.

Data Source: US Census Bureau.

Willow Lake CDP, IL Percentage of Ancestry Population in 2021

German

Unclassified

English

Irish

Italian

Other Groups

French (except Basque)

American

Norwegian

Swiss

Willow Lake CDP, IL Population By Ancestry in 2021

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Ancestry	Population	Percent of Pop. (%)
German	327	41.13
Unclassified	244	30.69
English	114	14.34
Irish	80	10.06
Italian	63	7.93
Other Groups	54	6.79
French (except Basque)	42	5.28
American	31	3.90
Norwegian	31	3.90
Swiss	28	3.52
Dutch	27	3.40
Swedish	26	3.27
Polish	15	1.89
Welsh	10	1.26
Croatian	4	0.50