What kinds of homes are in Troy, IL?

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

Troy, IL has 4,806 (±279) homes (2020–2024 American Community Survey).

That is about 771 homes per square mile of land.

72.6% are detached single-family houses.

12.4% are in buildings of two to four units.

7.5% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 4,806 (±279)
Detached houses: 72.6%
2–4 unit buildings: 12.4%
5+ unit buildings: 7.5%

Homes in Troy by building size

Housing units by units in structure, 2020–2024
Building type	Troy	Madison County	Illinois	United States
Single-family, detached	72.6% (±5.0 points)	78.9%	58.2%	61.3%
Single-family, attached (townhouse, rowhouse)	6.7% (±3.6 points)	2.9%	6.1%	6.2%
2 units	4.5% (±2.1 points)	3.1%	5.2%	3.4%
3 or 4 units	7.9% (±3.5 points)	5.0%	6.4%	4.3%
5 to 9 units	3.4% (±2.5 points)	2.4%	6.3%	4.5%
10 to 19 units	0.2% (±0.3 points)	2.1%	4.0%	4.3%
20 or more units	3.9% (±2.0 points)	3.4%	11.5%	10.3%
Mobile home	0.9% (±0.8 points)	2.2%	2.3%	5.6%
Boat, RV, van, etc.	0.0% (±0.8 points)	0.0%	0.0%	0.1%

In Troy, the share of homes in buildings of five or more units is not measurably different from Madison County (7.9%).

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 Troy

Nearest places with a published estimate, compared with Troy
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Troy	—	7.5% (±3.2 points)	—
Jarvis Township	2.2 mi	5.6% (±2.4 points)	Not measurably different
Maryville	3.9 mi	3.7% (±3.1 points)	Not measurably different
Pin Oak Township	4.5 mi	0.9% (±3.6 points)	Lower
Collinsville Township	5.1 mi	8.2% (±1.8 points)	Not measurably different
Glen Carbon	5.3 mi	10.3% (±2.9 points)	Not measurably different
Edwardsville Township	6.6 mi	16.3% (±2.8 points)	Higher
Edwardsville	6.8 mi	19.9% (±3.9 points)	Higher
Collinsville	7.0 mi	11.9% (±2.8 points)	Higher

Nearby places with a measurably lower figure: Pin Oak Township, IL (0.9%).

Nearby places with a measurably higher figure: Edwardsville Township, IL (16.3%), Edwardsville, IL (19.9%), Collinsville, IL (11.9%).

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 Madison County, place by place

Rank	Place	Homes in buildings of 5 or more units
12	Fort Russell Township	9.6% (±3.7 points)
13 (tie)	South Roxana	8.8% (±7.2 points)
13 (tie)	Helvetia Township	8.8% (±4.0 points)
15	Collinsville Township	8.2% (±1.8 points)
16	Granite City Township	8.0% (±2.3 points)
17	Granite City	7.6% (±2.2 points)
18	Troy	7.5% (±3.2 points)
19	Venice	7.1% (±4.2 points)
20	Pontoon Beach	6.2% (±3.3 points)
21	Wood River Township	6.0% (±1.7 points)
22	Olive Township	5.9% (±7.9 points)
23	Jarvis Township	5.6% (±2.4 points)
24	Chouteau Township	5.1% (±2.5 points)

Showing 13 of 53 places in Madison 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 Troy

How many homes are in Troy?

Troy, IL has an estimated 4,806 (±279) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Troy houses or apartments?

72.6% are detached houses and 6.7% attached houses, while 19.9% are in buildings of two or more units.

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

12.4% of homes in Troy 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 — Troy 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 Troy city, Illinois (place:76199, 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.