Lake St. Louis

Population: 17,538
Median household income: $123,427
Median home value: $375,300

Located in St. Charles County, Missouri, Lake St. Louis is a community with a population of 17,538. Its median household income of $123,427 runs above the St. Charles County figure of $102,912.

Between 2019 and 2023, Lake St. Louis's population grew 9.7% from 15,989 to 17,538, while its median home value rose 36.8% from $274,400 to $375,300.

49.5% of adults 25 and older hold a bachelor's degree or higher. Owners occupy 75.2% of the area's occupied homes.

Demographics

ACS 2019–2023

Population: 17,538
Median age: 43.2 yrs
Median household income: $123,427
Median home value: $375,300
Median gross rent: $1,608
Housing units: 7,495
Homeownership rate: 75.2%
Bachelor's degree or higher: 49.5%
Unemployment rate: 4.5%

Trends

ACS 5-year · 2019–2023

Population

15,98917,538

Median household income

$92,298$123,427

Median home value

$274,400$375,300

Median gross rent

$1,130$1,608

Year	Population	Median household income	Median home value	Median gross rent
2019	15,989	$92,298	$274,400	$1,130
2020	16,357	$100,122	$284,000	$1,139
2021	16,665	$106,098	$305,600	$1,281
2022	17,088	$114,230	$357,600	$1,404
2023	17,538	$123,427	$375,300	$1,608

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 53.2%

5 to 1716.8%

18 to 2410.3%

25 to 348.7%

35 to 4413.2%

45 to 5413.2%

55 to 6414.9%

65 to 749.9%

75 and over9.8%

	Count	Share
Under 5	568	3.2%
5 to 17	2,945	16.8%
18 to 24	1,803	10.3%
25 to 34	1,522	8.7%
35 to 44	2,318	13.2%
45 to 54	2,315	13.2%
55 to 64	2,606	14.9%
65 to 74	1,737	9.9%
75 and over	1,724	9.8%

Race & ethnicity

	Count	Share
White (non-Hispanic)	15,204	86.7%
Black or African American	737	4.2%
American Indian & Alaska Native	10	0.1%
Asian	257	1.5%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	74	0.4%
Two or more races	767	4.4%
Hispanic or Latino (any race)	489	2.8%

Educational attainment (age 25+)

No high school diploma2.8%

High school graduate16.7%

Some college or associate's31.0%

Bachelor's degree32.4%

Graduate or professional degree17.1%

	Count	Share
No high school diploma	342	2.8%
High school graduate	2,035	16.7%
Some college or associate's	3,794	31.0%
Bachelor's degree	3,965	32.4%
Graduate or professional degree	2,086	17.1%

Commute to work

Mean travel time to work: 27 min

Drove alone75.3%

Carpooled5.7%

Public transit0.0%

Walked0.2%

Bicycle0.0%

Worked from home18.3%

Other means0.5%

How workers get to work

	Count	Share
Drove alone	6,987	75.3%
Carpooled	528	5.7%
Public transit	0	0.0%
Walked	14	0.2%
Bicycle	0	0.0%
Worked from home	1,700	18.3%
Other means	47	0.5%

Travel time

	Count	Share
Under 15 min	1,663	22.0%
15 to 29 min	3,075	40.6%
30 to 44 min	1,880	24.8%
45 to 59 min	523	6.9%
60+ min	435	5.7%

Households

Average household size: 2.44
Poverty rate: 4.1% (711 of 17,538)

	Count	Share
Family households	5,192	72.3%
Nonfamily households	1,987	27.7%

Housing

Median year structure built: 1999

Occupancy

	Count	Share
Occupied	7,179	95.8%
Vacant	316	4.2%

Tenure (of occupied units)

	Count	Share
Owner-occupied	5,401	75.2%
Renter-occupied	1,778	24.8%

1-unit, detached66.9%

1-unit, attached12.2%

2 to 4 units2.9%

5 to 19 units14.2%

20 or more units3.8%

Mobile home & other0.0%

Units in structure

	Count	Share
1-unit, detached	5,011	66.9%
1-unit, attached	911	12.2%
2 to 4 units	218	2.9%
5 to 19 units	1,068	14.2%
20 or more units	287	3.8%
Mobile home & other	0	0.0%

Geography

Place GEOID: 2940043
Type (LSAD): 25
Land area: 8.55 sq mi
Water area: 0.81 sq mi
Center point: 38.7799, -90.7856