Lake St. Louis is a city located in St. Charles County Missouri. Lake St. Louis has a 2024 population of 19,891. Lake St. Louis is currently growing at a rate of 4.07% annually and its population has increased by 18.52% since the most recent census, which recorded a population of 16,783 in 2020.
The average household income in Lake St. Louis is $143,295 with a poverty rate of 3.49%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Lake St. Louis is 43.5 years, 42 years for males, and 45.1 years for females.
According to the most recent ACS, the racial composition of Lake St. Louis was:
White
Two or more races
Black or African American
Asian
Other race
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 6,897 | 2.48 | 78.5 | 21.5 |
| Married | 4,560 | 2.82 | 87.3 | 12.7 |
| Non Family | 1,780 | 1.31 | 60.6 | 39.4 |
| Female | 375 | 3.38 | 60.8 | 39.2 |
| Male | 182 | 3.4 | 69.8 | 30.2 |
2.84
Average Family Size
2.48
Average Household Size
78.5%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among native american people with a rate of 100%.
The highest rate of bachelors degrees is among native american people with a rate of 100%.
All
Male
Female
$70,414
Average Earnings
$83,980
Average Male
$58,333
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
94.31% of Lake St. Louis residents speak only English, while 5.69% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 3.33% of the population.
rate
3.49%
Overall Poverty Rate
3.49%
Male Poverty Rate
3.5%
Female Poverty Rate
The race most likely to be in poverty in Lake St. Louis is Other, with 16.41% below the poverty level.
The race least likely to be in poverty in Lake St. Louis is Hispanic, with 2.92% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 0.36%. Among those working part-time, it was 3.76%, and for those that did not work, the poverty rate was 9.09%.
Married
Widowed
Divorced
Separated
NeverMarried
62.3%
Overall Marriage Rate
63.3%
Male Marriage Rate
61.3%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
9.99%
Veteran Poverty Rate
38.13%
Veteran Disability Rate
LaborForceParticipation
66%
Labor Force Participation
63.5%
Employment Rate
3.8%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
63%
Born in Lake St. Louis
95.22%
Native Born
4.78%
Foreign Born
1.32%
Non Citizen
3.46%
Naturalized
95.22% of Lake St. Louis residents were born in the United States, with 63% having been born in Missouri. 1.32% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 23,776 | 777 | 3.38% |
| 2028 | 22,999 | 777 | 3.5% |
| 2027 | 22,222 | 777 | 3.62% |
| 2026 | 21,445 | 777 | 3.76% |
| 2025 | 20,668 | 777 | 3.91% |
| 2024 | 19,891 | 777 | 4.07% |
| 2023 | 19,114 | 777 | 4.24% |
| 2022 | 18,337 | 1,020 | 5.89% |
| 2021 | 17,317 | 534 | 3.18% |
| 2020 | 16,783 | -63 | -0.37% |
| 2019 | 16,846 | 642 | 3.96% |
| 2018 | 16,204 | 285 | 1.79% |
| 2017 | 15,919 | 198 | 1.26% |
| 2016 | 15,721 | 390 | 2.54% |
| 2015 | 15,331 | 320 | 2.13% |
| 2014 | 15,011 | 177 | 1.19% |
| 2013 | 14,834 | 82 | 0.56% |
| 2012 | 14,752 | 103 | 0.7% |
| 2011 | 14,649 | 42 | 0.29% |
| 2010 | 14,607 | 4,438 | 43.64% |
| 2000 | 10,169 | 2,769 | 37.42% |
| 1990 | 7,400 | 3,557 | 92.56% |
| 1980 | 3,843 | 0 | 0% |