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CITY · 2020 ACS

Lake St. Louis

Missouri · 16,707 residents · 8.54 sq mi
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The short version

Lake St. Louis is significantly wealthier than the US average, with a median household income of $100,122. The city has grown rapidly, with population up 64% since 2000. 47% of adults hold a bachelor's degree or higher, well above the national rate of 33%. Median home value has risen by half since 2000, reaching $284,000. With a median age of 44.3, the population is older than the US median of 38.8. Households here earn about 75% more than the Missouri median.

At a glance
Wealthier
above the US median
US median: $66,278
Older
median age 44.3
US median: 38.8
More educated
47% hold a bachelor's degree
US average: 33%
Stable housing
home values roughly flat, inflation adjusted
US median home: $265,253
Section 01

Population & growth

Total population
16,707
+64%since 2000
from 10,169 in 2000
2000 – 2025
Population density
1,956 / sq mi
+64%since 2000
from 1,191 / sq mi in 2000
US average: 280
Median age
44.3
+10%since 2000
from 40.3 in 2000
US average: 38.8
Population, 2000 – 2024
9K12K14K16K19K2000201020202024Lake St. Louis
202418K
2000201020202024
Section 02

Income & economy

Median household income
$100,122
−3%inflation adjusted, since 2000
from $68,830 in 2000
US average: $66,278
2000 – 2024
Per capita income
$46,974
+47%since 2000
from $32,064 in 2000
US average: $35,364
Households earning $100K+
61.0%
+7.9 ptssince 2009
from 53.1% in 2009
US average: 43.9%
Poverty rate
3.9%
Unchangedsince 2000
from 3.9% in 2000
US average: 12.8%
Workforce by industry, 2020
Information18.5%
US avg: 11.1%
Other services12.6%
US avg: 6.6%
Retail trade10.7%
US avg: 10%
Public administration10.1%
US avg: 4.7%
Wholesale trade5.9%
US avg: 6.7%
Transportation & warehousing3.8%
US avg: 2.5%
Finance & insurance3.7%
US avg: 5.5%
Professional, scientific, technical3%
US avg: 4.7%
Arts, entertainment, food2.2%
US avg: 2%
Education & health services0.7%
US avg: 0.8%
Agriculture, forestry, fishing0.5%
US avg: 1.7%
Construction0.5%
US avg: 1.2%
Manufacturing0%
US avg: 0.5%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$284,000
+15%inflation adjusted, since 2000
from $164,600 in 2000
US average: $265,253
2000 – 2024
Median gross rent
$1,139
+23%inflation adjusted, since 2000
from $616 in 2000
US average: $1,124
Owner-occupied
77.1%
−3.5 ptssince 2000
from 80.6% in 2000
22.9% rent
Afford Score
2.8
+19%since 2000
from 2.4 in 2000
2000 – 2024
RELATED:See current rent listings in Lake St. Louis on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic94.8%(9,641)
Black1.8%(183)
Hispanic / Latino1.3%(137)
Asian1%(99)
Other0%
Diversity Score10.1%(1,029)
2020
White, non-Hispanic85%(14,203)
Black4.3%(720)
Hispanic / Latino3.2%(530)
Asian2.4%(400)
Other4%(670)
Diversity Score32%(5,345)
Diversity Score
32
+216%since 2000
from 10 in 2000
2000 – 2024
Section 05

Education

Bachelor's degree or higher
47.2%
+9.5 ptssince 2000
from 37.7% in 2000
US average: 32.9%
High school or higher
96.1%
+1.6 ptssince 2000
from 94.4% in 2000
US average: 88.5%
Graduate degree
17.1%
+2.4 ptssince 2000
from 14.7% in 2000
US average: 12.7%
Section 06

Commute & transportation

Average commute
25.6 min
+35%since 2000
from 19.0 min in 2000
US average: 26.9
Drive alone to work
83.2%
−1.2 ptssince 2009
from 84.4% in 2009
US average: 75.1%
No vehicle available
0.9%
−0.6 ptssince 2009
from 1.5% in 2009
US average: 8.4%
Section 07

Work & employment

Unemployment rate
4.2%
−2.7 ptssince 2011
from 6.9% in 2011
US average: 5.4%
Labor force participation
62.7%
−7.2 ptssince 2011
from 70.0% in 2011
US average: 63.4%
Management & professional
43.5%
−26.6 ptssince 2009
from 70.1% in 2009
US average: 39.3%
Section 08

People & community

Male
49.9%
+0.3 ptssince 2009
from 49.7% in 2009
Female
50.1%
−0.3 ptssince 2009
from 50.3% in 2009
Foreign born
4.0%
+0.1 ptssince 2009
from 3.9% in 2009
US average: 13.5%
Uninsured
1.8%
−89.7 ptssince 2013
from 91.5% in 2013
US average: 8.8%
Drill deeper

Places similar to Lake St. Louis

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Pop 19,796
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Head to head

Compare Lake St. Louis to nearby cities

LAKE ST. LOUIS VS
O'Fallon
Income$110,443+10%
Home value$326,200+15%
Population96,101+402%
SEE FULL COMPARISON →
LAKE ST. LOUIS VS
Dardenne Prairie
Income$152,500+52%
Home value$432,000+52%
Population15,032−21%
SEE FULL COMPARISON →
LAKE ST. LOUIS VS
Wentzville
Income$112,394+12%
Home value$331,300+17%
Population49,495+159%
SEE FULL COMPARISON →
LAKE ST. LOUIS VS
St. Peters
Income$91,637−8%
Home value$269,900−5%
Population61,479+221%
SEE FULL COMPARISON →
Frequently asked

How many people live in Lake St. Louis, Missouri?

Lake St. Louis, Missouri has about 16,707 residents according to the 2020 American Community Survey.

What is the median household income in Lake St. Louis, Missouri?

The typical household in Lake St. Louis, Missouri earns about $100,122 a year. Half of households make more than that, and half make less.

Is Lake St. Louis, Missouri expensive?

In Lake St. Louis, Missouri, the median home is worth about $284,000, and the typical rent is about $1,139 a month.

How educated are people in Lake St. Louis, Missouri?

About 47.2% of adults age 25 and over in Lake St. Louis, Missouri hold a bachelor's degree or higher.

What is the poverty rate in Lake St. Louis, Missouri?

About 3.9% of people in Lake St. Louis, Missouri live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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