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CITY · 2000 CENSUS

Algonquin

Illinois · 23,276 residents · 12.539 sq mi
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The short version

Algonquin is significantly wealthier than the US average, with a median household income of $79,730. The city has grown rapidly, with population up 99% since 1990. 39% of adults hold a bachelor's degree or higher, well above the national rate of 24%. Median home value is $194,500. Poverty is rare here, at 1.7% of residents. Households here earn about 71% more than the Illinois median.

At a glance
Wealthier
above the US median
US median: $42,589
Younger
median age 33.6
US median: 35.2
More educated
39% hold a bachelor's degree
US average: 24%
Stable housing
home values roughly flat, inflation adjusted
US median home: $120,530
Section 01

Population & growth

Total population
23,276
+99%since 1990
from 11,705 in 1990
1990 – 2025
Population density
1,856 / sq mi
+99%since 1990
from 933 / sq mi in 1990
US average: 242
Median age
33.6
+8%since 1990
from 31.0 in 1990
US average: 35.2
Population, 1990 – 2024
10K16K21K27K33K1990201020202024Algonquin
202430K
1990201020202024
Section 02

Income & economy

Median household income
$79,730
+13%inflation adjusted, since 1990
from $53,665 in 1990
US average: $42,589
1990 – 2024
Per capita income
$29,820
+55%since 1990
from $19,255 in 1990
US average: $21,522
Poverty rate
1.7%
Unchangedsince 1990
from 1.6% in 1990
US average: 12.4%
Section 03

Housing

Median home value
$194,500
+10%inflation adjusted, since 1990
from $134,600 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$795
+14%inflation adjusted, since 1990
from $527 in 1990
US average: $602
Owner-occupied
93.7%
+4.2 ptssince 1990
from 89.5% in 1990
6.3% rent
Afford Score
2.4
−3%since 1990
from 2.5 in 1990
1990 – 2024
RELATED:See current rent listings in Algonquin on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic98.1%(11,478)
Black0.1%(12)
Hispanic / Latino1.6%(188)
Asian1.2%(137)
Diversity Score8.5%(997)
2000
White, non-Hispanic91.6%(21,327)
Black0.8%(194)
Hispanic / Latino4.1%(948)
Asian2.3%(542)
Diversity Score17.3%(4,035)
Diversity Score
17
+104%since 1990
from 9 in 1990
1990 – 2024
Section 05

Education

Bachelor's degree or higher
38.7%
+5.8 ptssince 1990
from 32.9% in 1990
US average: 24.4%
High school or higher
95.0%
+4.5 ptssince 1990
from 90.6% in 1990
US average: 80.3%
Graduate degree
11.1%
+2.5 ptssince 1990
from 8.7% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
26.5 min
−13%since 1990
from 30.5 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Drill deeper

Places similar to Algonquin

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Pop 35,030
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Pop 33,355
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Head to head

Compare Algonquin to nearby cities

ALGONQUIN VS
Lake in the Hills
Income$117,151+47%
Home value$321,900+66%
Population28,590−7%
SEE FULL COMPARISON →
ALGONQUIN VS
Carpentersville
Income$86,917+9%
Home value$234,100+20%
Population37,045+20%
SEE FULL COMPARISON →
ALGONQUIN VS
West Dundee
Income$105,368+32%
Home value$360,800+86%
Population8,570−72%
SEE FULL COMPARISON →
ALGONQUIN VS
Gilberts
Income$146,333+84%
Home value$347,300+79%
Population9,082−71%
SEE FULL COMPARISON →
Frequently asked

How many people live in Algonquin, Illinois?

Algonquin, Illinois has about 23,276 residents according to the 2000 Census.

What is the median household income in Algonquin, Illinois?

The typical household in Algonquin, Illinois earns about $79,730 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 $194,500, and the typical rent is about $795 a month.

How educated are people in Algonquin, Illinois?

About 38.7% 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 1.7% 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 11,571 residents, a change of about 99 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 →