What kinds of homes are in Lake St. Louis, MO?

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

Lake St. Louis, MO has 7,657 (±323) homes (2020–2024 American Community Survey).

That is about 896 homes per square mile of land.

66.8% are detached single-family houses.

3.5% are in buildings of two to four units.

18.7% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 7,657 (±323)
Detached houses: 66.8%
2–4 unit buildings: 3.5%
5+ unit buildings: 18.7%

Homes in Lake St. Louis by building size

Housing units by units in structure, 2020–2024
Building type	Lake St. Louis	St. Charles County	Missouri	United States
Single-family, detached	66.8% (±3.6 points)	74.7%	70.5%	61.3%
Single-family, attached (townhouse, rowhouse)	10.9% (±2.9 points)	7.5%	3.7%	6.2%
2 units	0.2% (±0.3 points)	0.9%	3.2%	3.4%
3 or 4 units	3.3% (±2.0 points)	3.1%	4.6%	4.3%
5 to 9 units	7.7% (±2.6 points)	3.1%	3.6%	4.5%
10 to 19 units	4.7% (±2.0 points)	3.7%	3.4%	4.3%
20 or more units	6.3% (±2.5 points)	4.4%	5.8%	10.3%
Mobile home	0.0% (±0.5 points)	2.5%	5.2%	5.6%
Boat, RV, van, etc.	0.0% (±0.5 points)	0.0%	0.1%	0.1%

In Lake St. Louis, the share of homes in buildings of five or more units is higher than in St. Charles County (11.2%).

It is also higher than in Missouri (12.8%).

It is not measurably different from the national figure (19.1%).

Homes in buildings of 5 or more units in places near Lake St. Louis

Nearest places with a published estimate, compared with Lake St. Louis
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Lake St. Louis	—	18.7% (±4.1 points)	—
Josephville	3.5 mi	19.0% (±30.6 points)	Not measurably different
O'Fallon	3.5 mi	10.2% (±1.2 points)	Lower
Dardenne Prairie	4.6 mi	1.4% (±1.2 points)	Lower
Wentzville	5.2 mi	8.0% (±1.8 points)	Lower
St. Paul	5.3 mi	3.1% (±5.8 points)	Lower
New Melle	6.7 mi	0.0% (±29.3 points)	Not measurably different
Cottleville	7.2 mi	19.5% (±7.2 points)	Not measurably different
Flint Hill	7.3 mi	29.3% (±25.6 points)	Not measurably different

Nearby places with a measurably lower figure: O'Fallon, MO (10.2%), Dardenne Prairie, MO (1.4%), Wentzville, MO (8.0%).

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 St. Charles County, place by place

Rank	Place	Homes in buildings of 5 or more units
1	Flint Hill	29.3% (±25.6 points)
2	St. Charles	20.0% (±2.0 points)
3	Cottleville	19.5% (±7.2 points)
4	Josephville	19.0% (±30.6 points)
5	Lake St. Louis	18.7% (±4.1 points)
6	Weldon Spring	16.9% (±6.1 points)
7	St. Peters	12.2% (±1.9 points)
8	O'Fallon	10.2% (±1.2 points)
9	Wentzville	8.0% (±1.8 points)
10	Foristell	4.4% (±14.3 points)
11	St. Paul	3.1% (±5.8 points)

Showing 11 of 17 places in St. Charles 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.

What you can do on Seayora in Lake St. Louis

One account for renting, owning, managing and fixing homes, with these figures beside you.

Own or manage a rental?

List it, sign the lease and collect rent online, with the figures for Lake St. Louis beside you.

Create a landlord account · See what landlords get

Looking for a place to rent?

Browse homes for rent near Lake St. Louis, save the ones you like and apply online.

Browse rentals · Create a renter account

Do repairs, renovations or maintenance?

Get found by owners and renters near Lake St. Louis, and send estimates and invoices from your phone.

Join as a pro · Find a pro

Questions about Lake St. Louis

How many homes are in Lake St. Louis?

Lake St. Louis, MO has an estimated 7,657 (±323) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Lake St. Louis houses or apartments?

66.8% are detached houses and 10.9% attached houses, while 22.2% are in buildings of two or more units.

How many two-family and small multifamily homes are in Lake St. Louis?

3.5% of homes in Lake St. Louis 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 — Lake St. Louis city, Missouri

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 Lake St. Louis city, Missouri (place:40043, in state:29).

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.