What is the median home value in Lake St. Louis, MO?

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

The median value of owner-occupied homes in Lake St. Louis, MO is $405,900 (±$24,017), as owners estimated it in the Census Bureau’s 2020–2024 American Community Survey.

In Lake St. Louis, the median home value went from $274,400 in 2015–2019 to $405,900 in 2020–2024 (+47.9%).

Prices (CPI-U) rose 22.7% over the same years, so it rose faster than prices: a measurable increase after inflation.

Figures last updated on November 12, 2026.

Median home value: $405,900 (±$24,017)
Owner-occupied homes: 5,559 (±340)
Most common range: $300,000 to $499,999

Home values in Lake St. Louis

Owner-occupied homes by value, 2020–2024
Value	Lake St. Louis	St. Charles County	Missouri	United States
Less than $50,000	0.7% (±0.8 points)	3.8%	6.8%	5.3%
$50,000 to $99,999	2.2% (±2.8 points)	1.3%	9.1%	6.1%
$100,000 to $149,999	0.9% (±0.9 points)	2.5%	11.3%	6.8%
$150,000 to $199,999	4.0% (±1.8 points)	7.9%	14.4%	9.0%
$200,000 to $299,999	16.4% (±3.9 points)	29.0%	24.1%	17.8%
$300,000 to $499,999	45.3% (±5.8 points)	42.1%	23.6%	26.9%
$500,000 to $999,999	28.5% (±4.8 points)	12.2%	9.1%	20.9%
$1,000,000 or more	2.0% (±1.3 points)	1.3%	1.6%	7.1%

The most common range is $300,000 to $499,999, 45.3% of owned homes.

Value is the owner’s own estimate of what the home and lot would sell for, not a sale price or an assessment.

Lake St. Louis against St. Charles County, its state and the nation

Estimate (90% margin of error)
	Lake St. Louis	St. Charles County	Missouri	United States
Median home value	$405,900 (±$24,017)	$320,800 (±$3,551)	$230,300 (±$880)	$332,700
Owner-occupied homes	5,559 (±340)	129,898 (±1,158)	1,708,413 (±9,125)	84,210,142

In Lake St. Louis, the median home value is higher than in St. Charles County ($320,800).

It is also higher than in Missouri ($230,300).

It is higher than the national figure ($332,700).

In St. Charles County, Lake St. Louis ranks 9 of 17 places with a published estimate, from highest to lowest median home value.

Statewide, it ranks 45 of 1,128.

Rankings use the estimates alone; where margins of error overlap, neighboring ranks may not truly differ.

How home values in Lake St. Louis have changed since 2015–2019

2015–2019 and 2020–2024 American Community Survey 5-year estimates
	2015–2019	2020–2024	Amount of change	Verdict
Median home value	$274,400 (±$14,458)	$405,900 (±$24,017)	+47.9%	Up after inflation
Median owner cost with a mortgage	$1,862 (±$105)	$2,225 (±$116)	+19.5%	No measurable change after inflation
Median real estate taxes	$3,391 (±$191)	$4,448 (±$272)	+31.2%	No measurable change after inflation

The Census Bureau publishes 2015–2019 dollars in 2019 dollars and 2020–2024 dollars in 2024 dollars.

Prices (the CPI-U, US Bureau of Labor Statistics) rose 22.7% between 2019 and 2024, so a dollar figure’s verdict compares the two after raising the earlier one by that much, using the Census Bureau’s test for a difference.

The two periods do not overlap, as the Census Bureau recommends for 5-year estimates.

Median home value in places near Lake St. Louis

Nearest places with a published estimate, compared with Lake St. Louis
Place	Distance	Median home value	Compared with this place
Lake St. Louis	—	$405,900 (±$24,017)	—
Josephville	3.5 mi	$494,600 (±$106,303)	Not measurably different
O'Fallon	3.5 mi	$326,200 (±$7,542)	Lower
Dardenne Prairie	4.6 mi	$432,000 (±$18,964)	Not measurably different
Wentzville	5.2 mi	$331,300 (±$8,150)	Lower
St. Paul	5.3 mi	$443,600 (±$15,960)	Higher
New Melle	6.7 mi	$397,800 (±$47,711)	Not measurably different
Cottleville	7.2 mi	$435,400 (±$37,965)	Not measurably different
Flint Hill	7.3 mi	$475,500 (±$49,997)	Higher

Nearby places with a measurably lower figure: O'Fallon, MO ($326,200), Wentzville, MO ($331,300).

Nearby places with a measurably higher figure: St. Paul, MO ($443,600), Flint Hill, MO ($475,500).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Median home value across St. Charles County, place by place

Rank	Place	Median home value
3	Flint Hill	$475,500 (±$49,997)
4	Weldon Spring Heights	$447,500 (±$33,336)
5	St. Paul	$443,600 (±$15,960)
6	Cottleville	$435,400 (±$37,965)
7	Dardenne Prairie	$432,000 (±$18,964)
8	Foristell	$431,700 (±$43,128)
9	Lake St. Louis	$405,900 (±$24,017)
10	New Melle	$397,800 (±$47,711)
11	Augusta	$362,500 (±$81,381)
12	Wentzville	$331,300 (±$8,150)
13	O'Fallon	$326,200 (±$7,542)
14	St. Charles	$298,700 (±$9,191)
15	St. Peters	$269,900 (±$5,777)

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

Survey years: 2020–2024 (American Community Survey 5-year estimates), compared with 2015–2019.

Margins of error are at the 90% confidence level.

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Questions about Lake St. Louis

What is the average home value in Lake St. Louis, MO?

The Census Bureau publishes the median: $405,900 (±$24,017) for owner-occupied homes in Lake St. Louis (2020–2024 American Community Survey).

Have home values in Lake St. Louis gone up?

In Lake St. Louis, the median home value went from $274,400 in 2015–2019 to $405,900 in 2020–2024 (+47.9%).

Prices (CPI-U) rose 22.7% over the same years, so it rose faster than prices: a measurable increase after inflation.

Is this what homes in Lake St. Louis sell for?

No: it is the value owners reported, which tends to lag the market; recent sale prices and an appraisal answer that question.

Sources

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 2015–2019 figures are B25077_001E, B25077_001M, B25088_002E, B25088_002M, B25103_001E, B25103_001M from the 2019 release.

The API needs a free key.

Request a Census API key.

DP04_0089E, DP04_0089M, DP04_0046E, DP04_0046M, DP04_0081PE, DP04_0081PM, DP04_0082PE, DP04_0082PM, DP04_0083PE, DP04_0083PM, DP04_0084PE, DP04_0084PM, DP04_0085PE, DP04_0085PM, DP04_0086PE, DP04_0086PM, DP04_0087PE, DP04_0087PM, DP04_0088PE, DP04_0088PM

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.