United States › Illinois › Algonquin CITY
Algonquin Illinois · 30,824 residents (2025 est.) · 12.5 sq mi
Time machine
COMPARE TO 1990 Census 2000 Census 2009 ACS 2010 ACS 2011 ACS 2012 ACS 2013 ACS 2014 ACS 2015 ACS 2016 ACS 2017 ACS 2018 ACS 2019 ACS 2020 ACS 2021 ACS 2022 ACS 2023 ACS
The short version
Algonquin is a city of 30,067 people in Illinois. Owners hold 88% of the housing stock. That is roughly 61% ahead of the Illinois median. That puts it in the top 3% of US cities for household income. Median household income runs $134,525, well clear of the $82,259 US median. 6,791 more people live here than in 2000.
At a glance
Wealthier
above the US median
US median: $82,259
Older
median age 41.4
US median: 38.9
More educated
44% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01
Population & growth from 23,276 in 2000
30,824 in 2025 (Census Bureau estimate)
2,398 / sq mi
−1%since 2009
from 2,430 / sq mi in 2009
US average: 281
from 33.6 in 2000
US average: 38.9
Population, 1990 – 2024
10K 16K 21K 27K 33K 1990 2000 2010 2020 2024 Algonquin Age distribution, 2024
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $134,525
−7%inflation adjusted, since 2000
from $79,730 in 2000
US average: $82,259
from $29,820 in 2000
US average: $44,673
Households earning $100K+
from 63.2% in 2009
US average: 53.3%
from 1.7% in 2000
US average: 12.5%
from 0.357 in 2010
US average: 0.476
Workforce by industry, 2024
Public administration 7.3%
Professional, scientific, technical 4.9%
Transportation & warehousing 3%
Arts, entertainment, food 2.6%
Education & health services 0.1%
Agriculture, forestry, fishing 0%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
$351,000
−1%inflation adjusted, since 2000
from $194,500 in 2000
US average: $376,019
$1,723
+19%inflation adjusted, since 2000
from $795 in 2000
US average: $1,442
from 93.7% in 2000
11.8% rent
from 2.0% in 2009
US average: 10.0%
from 3.02 people in 2009
US average: 2.54
from 32.9% in 2009
US average: 22.9%
from 51.0% in 2009
US average: 47.4%
from 3.1 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04
Race & ethnicity 2000
White, non-Hispanic 91.6%(21,327)
Hispanic / Latino 4.1%(948)
2024
White, non-Hispanic 72.7%(21,867)
Hispanic / Latino 15.6%(4,682)
from 34 in 2009
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins
Detailed origins & ancestry Hispanic origin
+ 3 more hispanic origin groups with data Ancestry
+ 33 more ancestry groups with data from 38.7% in 2000
US average: 35.6%
High school or higher
from 95.0% in 2000
US average: 89.6%
from 11.1% in 2000
US average: 14.0%
Section 06
Commute & transportation from 26.5 min in 2000
US average: 26.5
from 83.5% in 2009
US average: 68.9%
from 7.0% in 2009
US average: 8.5%
from 2.6% in 2009
US average: 3.2%
from 5.3% in 2009
US average: 15.0%
from 0.5% in 2009
US average: 2.4%
from 0.3% in 2009
US average: 0.4%
from 2.4% in 2009
US average: 8.3%
Section 07
Work & employment from 8.3% in 2011
US average: 5.2%
from 74.7% in 2011
US average: 63.5%
Women 20-64 in the labor force
from 82.0% in 2020
US average: 74.6%
from 9.0% in 2009
US average: 13.1%
from 42.5% in 2009
US average: 42.5%
Section 08
People & community from 11.6% in 2009
US average: 14.1%
from 7.3% in 2009
US average: 6.2%
from 5.6% in 2012
US average: 13.3%
from 6.4% in 2013
US average: 8.4%
from 92.5% in 2017
US average: 91.0%
Computer in household
from 95.6% in 2020
US average: 95.5%
from 90.5% in 2020
US average: 87.7%
from 81.4% in 2016
US average: 77.7%
from 4.8% in 2016
US average: 13.6%
Marital status
Men 15+
Never married 30.9%(3,999)
Women 15+
Never married 22.1%(2,663)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 6.4% in 2013
US average: 8.4%
from 74.8% in 2020
US average: 54.8%
Direct-purchase
from 15.5% in 2020
US average: 13.8%
from 13.8% in 2020
US average: 18.4%
from 7.3% in 2020
US average: 20.9%
VA health care
from 1.6% in 2020
US average: 2.2%
Any private
from 87.2% in 2020
US average: 67.1%
Any public
from 20.0% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 25.2%(330)
Gulf War (1990s) 25.4%(333)
Share of the 1,311 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper
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Frequently asked
How many people live in Algonquin, Illinois? Algonquin, Illinois has about 30,067 residents according to the 2024 American Community Survey.
What is the median household income in Algonquin, Illinois? The typical household in Algonquin, Illinois earns about $134,525 a year. Half of households make more than that, and half make less.
Is Algonquin, Illinois expensive? In Algonquin, Illinois, the median home is worth about $351,000, and the typical rent is about $1,723 a month.
How educated are people in Algonquin, Illinois? About 43.6% of adults age 25 and over in Algonquin, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Algonquin, Illinois? About 4.1% of people in Algonquin, Illinois live below the federal poverty line.
Has Algonquin, Illinois grown since 1990? Yes, Algonquin, Illinois has grown since 1990. The population has added about 18,362 residents, a change of about 157 percent over that period.
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