Lake St. Louis, MO
Demographics And Statistics

Demographics | Crime | Cost Of Living
Updated: 2025-10-25

Living In Lake St. Louis, Missouri Summary

Life in Lake St. Louis research summary. HomeSnacks has been using Saturday Night Science to research the quality of life in Lake St. Louis over the past nine years using Census, FBI, Zillow, and other primary data sources. Based on the most recently available data, we found the following about life in Lake St. Louis:

  • The population in Lake St. Louis is 17,538.

  • The median home value in Lake St. Louis is $426,956.

  • The median income in Lake St. Louis is $123,427.

  • The cost of living in Lake St. Louis is 109 which is 1.1x higher than the national average.

  • The median rent in Lake St. Louis is $1,608.

  • The unemployment rate in Lake St. Louis is 4.5%.

  • The poverty rate in Lake St. Louis is 4.1%.

  • The average high in Lake St. Louis is 65.9° and the average low is 44.9°.

Lake St. Louis SnackAbility

9
Overall SnackAbility
Jobs
8.5/10
Housing
8.5
Affordability
8.5
Diversity
6
Safety
7
Amenities
8.5
Education
9
Commute
7

Lake St. Louis, MO Crime Report

Crime in Lake St. Louis summary. We use data from the FBI to determine the crime rates in Lake St. Louis. Key points include:

  • There were 128 total crimes in Lake St. Louis in the last reporting year.

  • The overall crime rate per 100,000 people in Lake St. Louis is 662.0 / 100k people.

  • The violent crime rate per 100,000 people in Lake St. Louis is 56.9 / 100k people.

  • The property crime rate per 100,000 people in Lake St. Louis is 605.2 / 100k people.

  • Overall, crime in Lake St. Louis is -68.76% below the national average.

128
Total Crimes
-68.76%
Below National Average

Crime In Lake St. Louis Comparison Table

Statistic Count
Raw
Lake St. Louis
/ 100k People
Missouri
/ 100k People
National
/ 100k People
Total Crimes Per 100K 128 662.0 2,403.3 2,119.2
Violent Crime 11 56.9 462.0 359.0
Murder 0 0.0 7.8 5.0
Robbery 1 5.2 51.5 61.0
Aggravated Assault 9 46.6 357.5 256.0
Property Crime 117 605.2 1,941.2 1,760.0
Burglary 8 41.4 236.3 229.0
Larceny 103 532.7 1,306.5 1,272.0
Car Theft 6 31.0 398.4 259.0

Lake St. Louis, MO Cost Of Living

Cost of living in Lake St. Louis summary. We use data on the cost of living to determine how expensive it is to live in Lake St. Louis. Real estate prices drive most of the variance in cost of living around Missouri. Key points include:

  • The cost of living in Lake St. Louis is 109 with 100 being average.

  • The cost of living in Lake St. Louis is 1.1x higher than the national average.

  • The median home value in Lake St. Louis is $426,956.

  • The median income in Lake St. Louis is $123,427.

109
Lake St. Louis's Overall Cost Of Living
1.1x
Higher Than The National Average

Cost Of Living In Lake St. Louis Comparison Table

Living Expense Lake St. Louis Missouri National Average
Overall 109 88 100
Services 94 93 100
Groceries 99 96 100
Health 87 91 100
Housing 145 78 100
Transportation 95 90 100
Utilities 100 99 100

Lake St. Louis, MO Weather

  • The average high in Lake St. Louis is 65.9° and the average low is 44.9°.

  • There are 66.8 days of precipitation each year.

  • Expect an average of 42.2 inches of precipitation each year with 13.6 inches of snow.

StatLake St. Louis
Average Annual High65.9
Average Annual Low44.9
Annual Precipitation Days66.8
Average Annual Precipitation42.2
Average Annual Snowfall13.6
65.9°
Average High
66.8
Days of Rain

Lake St. Louis, MO Photos

Greaterstl
Source: Public Domain

Rankings for Lake St. Louis in Missouri

Locations Around Lake St. Louis

Map Of Lake St. Louis, MO

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Lake St. Louis Demographics And Statistics

Population over time in Lake St. Louis

The current population in Lake St. Louis is 17,538. The population has increased 26.2% from 2010.

Year Population % Change
2023 17,538 2.6%
2022 17,088 2.5%
2021 16,665 1.9%
2020 16,357 2.3%
2019 15,989 2.2%
2018 15,646 1.8%
2017 15,371 1.5%
2016 15,150 1.5%
2015 14,933 1.2%
2014 14,759 1.0%
2013 14,618 1.6%
2012 14,390 1.1%
2011 14,231 2.4%
2010 13,900 -

Race / Ethnicity in Lake St. Louis

White
86.7% (15,204)
African American
4.2% (737)
American Indian
0.1% (10)
Asian
1.5% (257)
Hawaiian
0.0% (0)
Other
0.4% (74)
Two Or More
4.4% (767)
Hispanic
2.8% (489)

Lake St. Louis is:

  • 86.7% White with 15,204 White residents.

  • 4.2% African American with 737 African American residents.

  • 0.1% American Indian with 10 American Indian residents.

  • 1.5% Asian with 257 Asian residents.

  • 0.0% Hawaiian with 0 Hawaiian residents.

  • 0.4% Other with 74 Other residents.

  • 4.4% Two Or More with 767 Two Or More residents.

  • 2.8% Hispanic with 489 Hispanic residents.

Race Lake St. Louis MO USA
White 86.7% 76.8% 58.2%
African American 4.2% 11.0% 12.0%
American Indian 0.1% 0.2% 0.5%
Asian 1.5% 2.1% 5.7%
Hawaiian 0.0% 0.1% 0.2%
Other 0.4% 0.4% 0.5%
Two Or More 4.4% 4.4% 3.9%
Hispanic 2.8% 5.1% 19.0%

Gender in Lake St. Louis

Female
50.4% (8,842)
Male
49.6% (8,696)
  • Lake St. Louis is 50.4% female with 8,842 female residents.

  • Lake St. Louis is 49.6% male with 8,696 male residents.

Gender Lake St. Louis MO USA
Female 50.4% 50.7% 50.5%
Male 49.6% 49.3% 49.5%

Highest level of educational attainment in Lake St. Louis for adults over 25

  • 1.0% of adults in Lake St. Louis completed < 9th grade.

  • 2.0% of adults in Lake St. Louis completed 9-12th grade.

  • 17.0% of adults in Lake St. Louis completed high school / ged.

  • 22.0% of adults in Lake St. Louis completed some college.

  • 9.0% of adults in Lake St. Louis completed associate's degree.

  • 32.0% of adults in Lake St. Louis completed bachelor's degree.

  • 14.0% of adults in Lake St. Louis completed master's degree.

  • 2.0% of adults in Lake St. Louis completed professional degree.

  • 1.0% of adults in Lake St. Louis completed doctorate degree.

< 9th Grade
1.0% (175)
9-12th Grade
2.0% (350)
High School / GED
17.0% (2,981)
Some College
22.0% (3,858)
Associate's Degree
9.0% (1,578)
Bachelor's Degree
32.0% (5,612)
Master's Degree
14.0% (2,455)
Professional Degree
2.0% (350)
Doctorate Degree
1.0% (175)
Education Lake St. Louis MO USA
< 9th Grade 1.0% 3.0% 5.0%
9-12th Grade 2.0% 6.0% 6.0%
High School / GED 17.0% 30.0% 26.0%
Some College 22.0% 21.0% 19.0%
Associate's Degree 9.0% 8.0% 9.0%
Bachelor's Degree 32.0% 20.0% 21.0%
Master's Degree 14.0% 9.0% 10.0%
Professional Degree 2.0% 2.0% 2.0%
Doctorate Degree 1.0% 1.0% 2.0%

Household Income For Lake St. Louis, Missouri

  • 4.0% of households in Lake St. Louis earn Less than $10,000.

  • 0.3% of households in Lake St. Louis earn $10,000 to $14,999.

  • 1.8% of households in Lake St. Louis earn $15,000 to $24,999.

  • 1.3% of households in Lake St. Louis earn $25,000 to $34,999.

  • 12.0% of households in Lake St. Louis earn $35,000 to $49,999.

  • 11.5% of households in Lake St. Louis earn $50,000 to $74,999.

  • 9.1% of households in Lake St. Louis earn $75,000 to $99,999.

  • 20.2% of households in Lake St. Louis earn $100,000 to $149,999.

  • 14.9% of households in Lake St. Louis earn $150,000 to $199,999.

  • 24.9% of households in Lake St. Louis earn $200,000 or more.

Less than $10,000
4.0% (69,868)
$10,000 to $14,999
0.3% (4,397)
$15,000 to $24,999
1.8% (32,002)
$25,000 to $34,999
1.3% (23,208)
$35,000 to $49,999
12.0% (210,583)
$50,000 to $74,999
11.5% (201,544)
$75,000 to $99,999
9.1% (159,036)
$100,000 to $149,999
20.2% (354,473)
$150,000 to $199,999
14.9% (261,396)
$200,000 or more
24.9% (437,289)
Income Lake St. Louis MO USA
Less than $10,000 4.0% 4.8% 4.9%
$10,000 to $14,999 0.3% 4.0% 3.6%
$15,000 to $24,999 1.8% 7.6% 6.6%
$25,000 to $34,999 1.3% 7.9% 6.8%
$35,000 to $49,999 12.0% 12.2% 10.4%
$50,000 to $74,999 11.5% 17.5% 15.7%
$75,000 to $99,999 9.1% 13.3% 12.7%
$100,000 to $149,999 20.2% 16.9% 17.4%
$150,000 to $199,999 14.9% 7.7% 9.3%
$200,000 or more 24.9% 8.1% 12.6%

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