What kinds of homes are in Algonquin, IL?

Name: Types of homes in Algonquin, IL, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Algonquin, IL has 11,151 (±402) homes (2020–2024 American Community Survey).

That is about 891 homes per square mile of land.

74.9% are detached single-family houses.

2.2% are in buildings of two to four units.

6.3% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 11,151 (±402)
Detached houses: 74.9%
2–4 unit buildings: 2.2%
5+ unit buildings: 6.3%

Homes in Algonquin by building size

Housing units by units in structure, 2020–2024
Building type	Algonquin	McHenry County	Illinois	United States
Single-family, detached	74.9% (±2.7 points)	77.3%	58.2%	61.3%
Single-family, attached (townhouse, rowhouse)	16.7% (±2.3 points)	10.2%	6.1%	6.2%
2 units	0.4% (±0.5 points)	1.1%	5.2%	3.4%
3 or 4 units	1.8% (±0.8 points)	2.6%	6.4%	4.3%
5 to 9 units	1.4% (±0.9 points)	4.3%	6.3%	4.5%
10 to 19 units	1.0% (±0.7 points)	1.7%	4.0%	4.3%
20 or more units	3.9% (±1.8 points)	2.1%	11.5%	10.3%
Mobile home	0.0% (±0.3 points)	0.7%	2.3%	5.6%
Boat, RV, van, etc.	0.0% (±0.3 points)	0.0%	0.0%	0.1%

In Algonquin, the share of homes in buildings of five or more units is not measurably different from McHenry County (8.1%).

It is also lower than in Illinois (21.8%).

It is lower than the national figure (19.1%).

Homes in buildings of 5 or more units in places near Algonquin

Nearest places with a published estimate, compared with Algonquin
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Algonquin	—	6.3% (±2.1 points)	—
Lake in the Hills	1.4 mi	7.1% (±1.9 points)	Not measurably different
Carpentersville	2.9 mi	12.3% (±2.7 points)	Higher
Dundee Township	3.5 mi	15.0% (±1.8 points)	Higher
Algonquin Township	3.6 mi	11.1% (±1.4 points)	Higher
West Dundee	3.9 mi	33.5% (±7.5 points)	Higher
Gilberts	4.3 mi	0.2% (±1.7 points)	Lower
Trout Valley	4.4 mi	0.0% (±25.1 points)	Not measurably different
Sleepy Hollow	4.8 mi	2.8% (±4.0 points)	Not measurably different

Nearby places with a measurably lower figure: Gilberts, IL (0.2%).

Nearby places with a measurably higher figure: Carpentersville, IL (12.3%), Dundee Township, IL (15.0%), Algonquin Township, IL (11.1%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes in buildings of 5 or more units across McHenry County, place by place

Rank	Place	Homes in buildings of 5 or more units
11	Hebron	10.0% (±12.7 points)
12	Harvard	9.4% (±4.0 points)
13	Huntley	8.1% (±3.6 points)
14	Chemung Township	8.0% (±3.4 points)
15	Alden Township	7.3% (±11.8 points)
16	Lake in the Hills	7.1% (±1.9 points)
17 (tie)	Algonquin	6.3% (±2.1 points)
17 (tie)	Nunda Township	6.3% (±1.8 points)
19 (tie)	Cary	5.8% (±2.2 points)
19 (tie)	McHenry Township	5.8% (±1.6 points)
21	Hebron Township	5.4% (±7.1 points)
22 (tie)	McCullom Lake	4.6% (±13.1 points)
22 (tie)	Dunham Township	4.6% (±9.0 points)

Showing 13 of 46 places in McHenry County, ranked from highest to lowest.

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

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Questions about Algonquin

How many homes are in Algonquin?

Algonquin, IL has an estimated 11,151 (±402) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Algonquin houses or apartments?

74.9% are detached houses and 16.7% attached houses, while 8.5% are in buildings of two or more units.

How many two-family and small multifamily homes are in Algonquin?

2.2% of homes in Algonquin are in buildings of two to four units, the small rental buildings that are often owner-occupied.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Algonquin village, Illinois

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Algonquin village, Illinois (place:00685, in state:17).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The API needs a free key.

Request a Census API key.

DP04_0001E, DP04_0001M, DP04_0007PE, DP04_0007PM, DP04_0008PE, DP04_0008PM, DP04_0009PE, DP04_0009PM, DP04_0010PE, DP04_0010PM, DP04_0011PE, DP04_0011PM, DP04_0012PE, DP04_0012PM, DP04_0013PE, DP04_0013PM, DP04_0014PE, DP04_0014PM, DP04_0015PE, DP04_0015PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.