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Village in Kane County and McHenry County, Illinois

Algonquin

District lines run through Algonquin, so who represents you here depends on your street. Search your address to see yours.

Who lives in Algonquin

Census survey estimates for 2020 to 2024, rounded.

People

Population
30,100
Median age
41.4 years
Under 18
21%
65 and over
15%
Veterans, of adults
6%
Speak another language at home
21%

Race and ethnicity

Hispanic or Latino, of any race
16%
White, not Hispanic
73%
Black, not Hispanic
3%
Asian, not Hispanic
5%

Income and housing

Median household income
$134,500
Below the poverty line
4%
Bachelor's or higher, adults 25+
44%
Owner-occupied homes
88%
Median home value
$351,000

2024 vote for president

Not counted for Algonquin on its own: its precincts follow township lines, not the town’s. See the figures for Kane County and McHenry County.

Represent all of Algonquin

Represent part of Algonquin

Each represents the part of Algonquin inside their district. Under each is how many people lived in that part at the 2020 Census, of 29,700 in all.

Algonquin's districts (11)

U.S. House (3)

Illinois Senate (4)

Illinois House (4)

Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–2024; towns and counties from the 2020 Census, 119th Congressional District and 2024 state legislative district tabulation. Figures rounded by us. Retrieved 2026-10-19. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.