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Lake County Gazette

Thursday, October 2, 2025

Census Bureau reports Lake Zurich population was 19,912 in 2020

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Lake Zurich had a population of 19,912 people in 2020, according to U.S. Census Bureau data obtained by the Lake County Gazette.

The median age was 38, with 51.4 percent of the total population being female and 48.6 percent male.

The state's total population in 2020 was 12,716,164.

An agency of the U.S. Federal Statistical System, the Census Bureau is responsible for compiling statistical facts about the American people, places and economy. Data for this story was compiled from the bureau’s American Community Survey. Information from the survey helps to determine how federal and state funds are distributed.

Lake Zurich population by sex

Estimated NumberPercent of total population
Male9,68548.6
Female10,22751.4
Total Population19,912100

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