What kinds of homes are in Boulder Hill, IL?

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

Boulder Hill, IL has 3,124 (±310) homes (2020–2024 American Community Survey).

That is about 2,143 homes per square mile of land.

91.4% are detached single-family houses.

1.5% are in buildings of two to four units.

3.7% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 3,124 (±310)
Detached houses: 91.4%
2–4 unit buildings: 1.5%
5+ unit buildings: 3.7%

Homes in Boulder Hill by building size

Housing units by units in structure, 2020–2024
Building type	Boulder Hill	Kendall County	Illinois	United States
Single-family, detached	91.4% (±2.7 points)	73.9%	58.2%	61.3%
Single-family, attached (townhouse, rowhouse)	2.6% (±1.5 points)	17.0%	6.1%	6.2%
2 units	0.2% (±0.3 points)	0.6%	5.2%	3.4%
3 or 4 units	1.3% (±1.1 points)	2.4%	6.4%	4.3%
5 to 9 units	1.2% (±1.3 points)	1.4%	6.3%	4.5%
10 to 19 units	0.0% (±1.2 points)	2.2%	4.0%	4.3%
20 or more units	2.5% (±1.7 points)	2.3%	11.5%	10.3%
Mobile home	0.8% (±0.9 points)	0.2%	2.3%	5.6%
Boat, RV, van, etc.	0.0% (±1.2 points)	0.0%	0.0%	0.1%

In Boulder Hill, the share of homes in buildings of five or more units is not measurably different from Kendall County (5.9%).

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 Boulder Hill

Nearest places with a published estimate, compared with Boulder Hill
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Boulder Hill	—	3.7% (±2.5 points)	—
Montgomery	1.5 mi	7.5% (±2.8 points)	Higher
Oswego	1.9 mi	7.0% (±2.1 points)	Higher
Oswego Township	2.5 mi	8.4% (±2.2 points)	Higher
Aurora Township	4.1 mi	17.4% (±1.6 points)	Higher
Aurora	4.3 mi	15.7% (±1.3 points)	Higher
Bristol Township	5.6 mi	7.3% (±2.4 points)	Higher
Yorkville	5.9 mi	10.3% (±3.3 points)	Higher
Sugar Grove Township	6.4 mi	2.2% (±1.4 points)	Not measurably different

Nearby places with a measurably higher figure: Montgomery, IL (7.5%), Oswego, IL (7.0%), Oswego Township, IL (8.4%).

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 Kendall County, place by place

Rank	Place	Homes in buildings of 5 or more units
1	Yorkville	10.3% (±3.3 points)
2	Newark	9.9% (±10.1 points)
3	Oswego Township	8.4% (±2.2 points)
4	Bristol Township	7.3% (±2.4 points)
5	Oswego	7.0% (±2.1 points)
6	Big Grove Township	6.6% (±6.8 points)
7	Boulder Hill	3.7% (±2.5 points)
8	Kendall Township	3.6% (±2.1 points)
9	Plano	1.3% (±0.9 points)
10	Little Rock Township	1.0% (±0.8 points)
11 (tie)	Lisbon	0.0% (±49.2 points)
11 (tie)	Millbrook	0.0% (±50.9 points)
11 (tie)	Plattville	0.0% (±64.4 points)

Showing 13 of 17 places in Kendall County, ranked from highest to lowest.

Boulder Hill is a census-designated place: an unincorporated community the Census Bureau draws for statistics, with no municipal government of its own.

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 Boulder Hill

How many homes are in Boulder Hill?

Boulder Hill, IL has an estimated 3,124 (±310) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Boulder Hill houses or apartments?

91.4% are detached houses and 2.6% attached houses, while 5.2% are in buildings of two or more units.

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

1.5% of homes in Boulder Hill 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 — Boulder Hill CDP, 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 Boulder Hill CDP, Illinois (place:07419, 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.