What kinds of homes are in Ottawa, IL?

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

Ottawa, IL has 8,217 (±343) homes (2020–2024 American Community Survey).

That is about 552 homes per square mile of land.

70.1% are detached single-family houses.

9.9% are in buildings of two to four units.

11.0% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 8,217 (±343)
Detached houses: 70.1%
2–4 unit buildings: 9.9%
5+ unit buildings: 11.0%

Homes in Ottawa by building size

Housing units by units in structure, 2020–2024
Building type	Ottawa	LaSalle County	Illinois	United States
Single-family, detached	70.1% (±3.8 points)	78.8%	58.2%	61.3%
Single-family, attached (townhouse, rowhouse)	8.8% (±2.5 points)	3.0%	6.1%	6.2%
2 units	6.1% (±2.1 points)	3.3%	5.2%	3.4%
3 or 4 units	3.8% (±1.5 points)	4.4%	6.4%	4.3%
5 to 9 units	2.5% (±1.2 points)	2.1%	6.3%	4.5%
10 to 19 units	3.9% (±1.5 points)	1.7%	4.0%	4.3%
20 or more units	4.6% (±1.4 points)	2.5%	11.5%	10.3%
Mobile home	0.2% (±0.3 points)	4.2%	2.3%	5.6%
Boat, RV, van, etc.	0.0% (±0.5 points)	0.0%	0.0%	0.1%

In Ottawa, the share of homes in buildings of five or more units is higher than in LaSalle County (6.3%).

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 Ottawa

Nearest places with a published estimate, compared with Ottawa
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Ottawa	—	11.0% (±2.4 points)	—
Ottawa Township	2.9 mi	7.9% (±1.9 points)	Lower
Naplate	3.3 mi	0.7% (±17.9 points)	Not measurably different
South Ottawa Township	3.6 mi	10.9% (±4.2 points)	Not measurably different
Rutland Township (LaSalle County)	4.4 mi	4.8% (±5.0 points)	Lower
Fall River Township	4.5 mi	0.0% (±15.4 points)	Not measurably different
Dayton Township	4.7 mi	13.3% (±8.0 points)	Not measurably different
Wallace Township	5.4 mi	0.0% (±26.7 points)	Not measurably different
Grand Ridge	8.2 mi	0.0% (±24.4 points)	Not measurably different

Nearby places with a measurably lower figure: Ottawa Township, IL (7.9%), Rutland Township (LaSalle County), IL (4.8%).

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 LaSalle County, place by place

Rank	Place	Homes in buildings of 5 or more units
1	Dayton Township	13.3% (±8.0 points)
2	Streator	11.5% (±4.1 points)
3 (tie)	Bruce Township	11.2% (±4.1 points)
3 (tie)	Otter Creek Township (LaSalle County)	11.2% (±5.7 points)
5	Ottawa	11.0% (±2.4 points)
6	South Ottawa Township	10.9% (±4.2 points)
7	Mendota	9.8% (±4.4 points)
8	Mendota Township	8.9% (±4.0 points)
9	Marseilles	8.4% (±4.8 points)
10	Ottawa Township	7.9% (±1.9 points)
11 (tie)	LaSalle	7.5% (±3.0 points)

Showing 11 of 62 places in LaSalle 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 Ottawa

How many homes are in Ottawa?

Ottawa, IL has an estimated 8,217 (±343) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Ottawa houses or apartments?

70.1% are detached houses and 8.8% attached houses, while 20.9% are in buildings of two or more units.

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

9.9% of homes in Ottawa 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 — Ottawa city, 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 Ottawa city, Illinois (place:56926, 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.