What kinds of homes are in Decatur, IL?

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

Decatur, IL has 36,018 (±408) homes (2020–2024 American Community Survey).

That is about 824 homes per square mile of land.

73.8% are detached single-family houses.

4.1% are in buildings of two to four units.

16.8% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 36,018 (±408)
Detached houses: 73.8%
2–4 unit buildings: 4.1%
5+ unit buildings: 16.8%

Homes in Decatur by building size

Housing units by units in structure, 2020–2024
Building type	Decatur	Macon County	Illinois	United States
Single-family, detached	73.8% (±1.6 points)	78.5%	58.2%	61.3%
Single-family, attached (townhouse, rowhouse)	2.7% (±0.8 points)	2.3%	6.1%	6.2%
2 units	0.9% (±0.3 points)	0.8%	5.2%	3.4%
3 or 4 units	3.2% (±0.9 points)	2.6%	6.4%	4.3%
5 to 9 units	3.9% (±0.8 points)	3.6%	6.3%	4.5%
10 to 19 units	4.5% (±0.9 points)	3.7%	4.0%	4.3%
20 or more units	8.4% (±1.3 points)	6.3%	11.5%	10.3%
Mobile home	2.6% (±0.7 points)	2.3%	2.3%	5.6%
Boat, RV, van, etc.	0.0% (±0.1 points)	0.0%	0.0%	0.1%

In Decatur, the share of homes in buildings of five or more units is higher than in Macon County (13.6%).

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 Decatur

Nearest places with a published estimate, compared with Decatur
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Decatur	—	16.8% (±1.8 points)	—
Decatur Township	1.5 mi	15.0% (±1.9 points)	Not measurably different
Hickory Point Township	4.9 mi	22.5% (±4.1 points)	Higher
Forsyth	5.1 mi	4.7% (±4.0 points)	Lower
Mount Zion	5.6 mi	11.1% (±7.4 points)	Not measurably different
South Wheatland Township	5.7 mi	0.0% (±3.1 points)	Lower
Long Creek Township	5.7 mi	11.3% (±3.5 points)	Lower
Long Creek	5.8 mi	0.0% (±11.1 points)	Lower
Whitmore Township	6.6 mi	2.8% (±2.7 points)	Lower

Nearby places with a measurably lower figure: Forsyth, IL (4.7%), South Wheatland Township, IL (0.0%), Long Creek Township, IL (11.3%).

Nearby places with a measurably higher figure: Hickory Point Township, IL (22.5%).

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 Macon County, place by place

Rank	Place	Homes in buildings of 5 or more units
1	Hickory Point Township	22.5% (±4.1 points)
2	Warrensburg	19.8% (±8.3 points)
3	Decatur	16.8% (±1.8 points)
4	Illini Township	16.2% (±6.9 points)
5	Decatur Township	15.0% (±1.9 points)
6	Maroa	14.3% (±10.6 points)
7	Maroa Township	11.5% (±8.7 points)
8	Oreana	11.4% (±10.5 points)
9	Long Creek Township	11.3% (±3.5 points)

Showing 9 of 28 places in Macon 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 Decatur

How many homes are in Decatur?

Decatur, IL has an estimated 36,018 (±408) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Decatur houses or apartments?

73.8% are detached houses and 2.7% attached houses, while 20.9% are in buildings of two or more units.

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

4.1% of homes in Decatur 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 — Decatur 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 Decatur city, Illinois (place:18823, 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.