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CITY · 2020 ACS

Algonquin

Illinois · 29,700 residents · 12.5 sq mi
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The short version

With 29,700 people, Algonquin is a city in Illinois. That is roughly 60% ahead of the Illinois median. Owners hold 85% of the housing stock. Median household income runs $109,819, well clear of the $66,278 US median. 44% of adults hold a bachelor's degree or higher. 6,424 more people live here than in 2000.

At a glance
Wealthier
above the US median
US median: $66,278
Older
median age 41.9
US median: 38.8
More educated
44% hold a bachelor's degree
US average: 33%
More affordable
home values down 8%, inflation adjusted
US median home: $265,253
Section 01

Population & growth

29,700
+28%since 2000
from 23,276 in 2000
1990 – 2025
41.9
+25%since 2000
from 33.6 in 2000
US average: 38.8
Land area
12.5 sq mi
Population, 19902024
10K16K21K27K33K19902000201020202024Algonquin
202430K
1990201020202024
Age distribution, 2020
Under 54.8%(1,440)
US avg: 5.6%
5 to 95.8%(1,722)
US avg: 6.1%
10 to 146.8%(2,025)
US avg: 6.5%
15 to 197.3%(2,175)
US avg: 6.6%
20 to 246.1%(1,811)
US avg: 6.7%
25 to 3410.3%(3,064)
US avg: 13.5%
35 to 4412.7%(3,771)
US avg: 12.7%
45 to 5415.5%(4,597)
US avg: 12.3%
55 to 6416.2%(4,821)
US avg: 13.1%
65 to 749.2%(2,720)
US avg: 10%
75 to 843.8%(1,125)
US avg: 4.9%
85 and over1.4%(429)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

$109,819
−8%inflation adjusted, since 2000
from $79,730 in 2000
US average: $66,278
1990 – 2024
$46,601
+56%since 2000
from $29,820 in 2000
US average: $35,364
Households earning $100K+
67.5%
+4.4 ptssince 2009
from 63.2% in 2009
US average: 43.9%
4.2%
+2.5 ptssince 2000
from 1.7% in 2000
US average: 12.8%
Workforce by industry, 2020
Retail trade14.3%
US avg: 10%
Information13.3%
US avg: 11.1%
Other services8%
US avg: 6.6%
Public administration6.6%
US avg: 4.7%
Finance & insurance4.9%
US avg: 5.5%
Professional, scientific, technical4.7%
US avg: 4.7%
Wholesale trade4.2%
US avg: 6.7%
Arts, entertainment, food3.3%
US avg: 2%
Transportation & warehousing3.1%
US avg: 2.5%
Agriculture, forestry, fishing0.5%
US avg: 1.7%
Construction0.4%
US avg: 1.2%
Education & health services0.2%
US avg: 0.8%
Manufacturing0.1%
US avg: 0.5%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

$268,100
−8%inflation adjusted, since 2000
from $194,500 in 2000
US average: $265,253
1990 – 2024
$1,659
+39%inflation adjusted, since 2000
from $795 in 2000
US average: $1,124
84.9%
−8.8 ptssince 2000
from 93.7% in 2000
15.1% rent
2.76 people
−9%since 2009
from 3.02 people in 2009
US average: 2.61
2.4
−20%since 2009
from 3.1 in 2009
2009 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04

Race & ethnicity

2000
White, non-Hispanic91.6%(21,327)
Black0.8%(194)
Hispanic / Latino4.1%(948)
Asian2.3%(542)
Other0%
2020
White, non-Hispanic75.2%(22,327)
Black2.4%(704)
Hispanic / Latino11.3%(3,359)
Asian7.2%(2,143)
Other2.9%(875)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican7.2%(2,219)
Colombian0.4%(110)
Nicaraguan0.3%(100)
Cuban0.3%(80)
Guatemalan0.1%(43)
Spaniard0.1%(20)
Honduran0.1%(17)
Asian origin
Asian Indian2.1%(654)
Pakistani0.9%(290)
Vietnamese0.9%(285)
Chinese0.7%(220)
Laotian0.7%(206)
Filipino0.6%(199)
Korean0.4%(123)
Hmong0.2%(62)
Ancestry
German25.5%(7,862)
Polish16.6%(5,119)
Irish16.3%(5,014)
Italian12.1%(3,736)
English8%(2,455)
Swedish4.5%(1,389)
American2.6%(788)
French1.9%(582)
Scottish1.8%(551)
Russian1.7%(539)
Czech1.3%(392)
Norwegian1.3%(390)
+ 28 more ancestry groups with data
Dutch0.9%(276)
Ukrainian0.9%(263)
Greek0.7%(231)
Slovak0.6%(177)
Lithuanian0.6%(173)
Danish0.6%(172)
Welsh0.5%(169)
Scotch-Irish0.5%(145)
Belgian0.4%(137)
Austrian0.4%(136)
Hungarian0.4%(114)
Romanian0.3%(107)
British0.3%(97)
Croatian0.3%(90)
Finnish0.3%(89)
Armenian0.3%(86)
Syrian0.2%(60)
Swiss0.2%(57)
Iraqi0.1%(43)
Iranian0.1%(35)
Portuguese0.1%(24)
Turkish0.1%(19)
Canadian0.1%(16)
West Indian0.1%(16)
Jamaican0.1%(16)
Serbian0%(8)
Section 05

Education

44.0%
+5.3 ptssince 2000
from 38.7% in 2000
US average: 32.9%
High school or higher
94.4%
−0.6 ptssince 2000
from 95.0% in 2000
US average: 88.5%
15.3%
+4.2 ptssince 2000
from 11.1% in 2000
US average: 12.7%
Section 06

Commute & transportation

33.7 min
+27%since 2000
from 26.5 min in 2000
US average: 26.9
80.8%
−2.8 ptssince 2009
from 83.5% in 2009
US average: 75.1%
6.5%
+4.1 ptssince 2009
from 2.4% in 2009
US average: 8.4%
Section 07

Work & employment

5.9%
−2.4 ptssince 2011
from 8.3% in 2011
US average: 5.4%
74.8%
+0.1 ptssince 2011
from 74.7% in 2011
US average: 63.4%
Women 20-64 in the labor force
82.0%
US average: 73.3%
45.8%
+3.3 ptssince 2009
from 42.5% in 2009
US average: 39.3%
Section 08

People & community

48.7%
−1.4 ptssince 2009
from 50.1% in 2009
51.3%
+1.4 ptssince 2009
from 49.9% in 2009
12.3%
+0.8 ptssince 2009
from 11.6% in 2009
US average: 13.5%
3.5%
−2.9 ptssince 2013
from 6.4% in 2013
US average: 8.8%
Computer in household
95.6%
US average: 91.9%
90.5%
US average: 86.2%
Marital status (2024)
Men 15+
Never married30.9%(3,999)
Married60%(7,751)
Widowed2%(262)
Divorced7.1%(914)
Women 15+
Never married22.1%(2,663)
Married61.2%(7,368)
Widowed6.6%(795)
Divorced10.1%(1,214)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09

Health coverage

3.5%
−2.9 ptssince 2013
from 6.4% in 2013
US average: 8.8%
74.8%
US average: 55.4%
Direct-purchase
15.5%
US average: 13.7%
13.8%
US average: 17.6%
7.3%
US average: 20.0%
VA health care
1.6%
US average: 2.3%
Any private
87.2%
US average: 68.1%
Any public
20.0%
US average: 35.2%

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, 2020
Gulf War (2001 or later)9.7%(131)
US avg: 20.6%
Gulf War (1990s)17.7%(239)
US avg: 21.4%
Vietnam era34.8%(469)
US avg: 35.2%
Korean War15.1%(204)
US avg: 7.6%
World War II6.3%(85)
US avg: 2.9%

Share of the 1,348 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
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Frequently asked

How many people live in Algonquin, Illinois?

Algonquin, Illinois has about 29,700 residents according to the 2020 American Community Survey.

What is the median household income in Algonquin, Illinois?

The typical household in Algonquin, Illinois earns about $109,819 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 $268,100, and the typical rent is about $1,659 a month.

How educated are people in Algonquin, Illinois?

About 44.0% 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 4.2% 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 17,995 residents, a change of about 154 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →