Lake St. LouisMO
A town settled in 1961, now home to 19,129 people. 24% more nonprofits per person than the typical Missouri town.
Trash day: look up yoursIs Lake St. Louis a good place to live?
The everyday basics are strong; the price of a home is the catch. Where it does best is schools: its public schools beat 85% of Missouri towns on state tests and graduation. Lake St. Louis ranks 31st of 247 in Missouri, with an A− overall. Set against the rest, it does better than 84% of U.S. towns. It also does well on incomes (A): the median household earns $126K. What holds it back is cost of living: the typical home is worth about $433K, 5.4 years of the St. Louis metro’s $80K median household income. Lake St. Louis's civic life (library use, community groups, volunteering) is stronger than in 88% of U.S. towns. 52% of adults 25 and older hold a bachelor’s degree or more here, above both Missouri’s towns (22%) and U.S. towns (29%).
Figures: schools, state test and graduation results · incomes, Census ACS, 2020–24 · home values, Zillow.
What makes Lake St. Louis stand out
Where Lake St. Louis beats most towns.
Community nonprofits per 1,000 residents
| School | Grades | Students |
|---|---|---|
| Green Tree Elem. | K–5 | 640 |
| Andrews Academy | K–8 | 123 |
| Hope Montessori Academy, Lake St. Louis | PK–K | 84 |
| Widest gap | Lake St. Louis | MO |
|---|---|---|
| Fewer older adults who have lost all their teeth | 7.2% | 15.8% |
Lake St. Louis has grown 31% since 2010
14,545 counted in 2010 and 16,707 in 2020; an estimated 19,129 in 2025.
Growth hasn’t slowed: 14.4% since 2020, after 14.9% in the decade before.
U.S. Census 2010 & 2020 counts · Census Bureau estimate, July 1, 2025
How Lake St. Louis grades
Each subject compared with towns across the country (schools within Missouri), ordered by how far Lake St. Louis is from typical.
How TownRatings grades towns →
Moving to Lake St. Louis: who provides what
Who provides power, water and the rest in Lake St. Louis, and how to reach them.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.
The data
Ordered by what stands out in Lake St. Louis.
Lake St. Louis fares better on crime within Missouri than nationally, trades workers with O'Fallon and other neighbors and has less tooth loss than most of Missouri.
Lake St. Louis has set aside 1.5% of its land for conservation
There are 9.5 miles of trail across 4 parks and preserves. The biggest park or preserve is Founders Park, at 32 acres. For Lake St. Louis, the concentration of trails is 1.0 miles per square mile.
| Lake St. Louis | Missouri towns | U.S. towns | |
|---|---|---|---|
| Miles of trail per square mile | 1.0 miles per square mile | 0.3 | 0.4 |
| Conserved land | 1.5% | 2.1% | 4.3% |
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Boulevard Park | 0.9 mi | 24 |
| 2. Founders Park | 0.6 mi | 32 |
| 3. Hawk Ridge Park | — | 7 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Lake St. Louis earns an A for schools
That grade comes with a C− for cost of living: the typical home is worth about $433K.
Its public schools are run by Wentzville R-IV. Two of its 5 schools are shown below, with the reason for each. 640 students attend Lake St. Louis’s public school.
| School | Level | Students | Letter |
|---|---|---|---|
| Green Tree Elem.Largest public elementary schoolGrades K–5 | Grades K–5 | 640 | A |
| Lafayette Academy PrivateLargest high schoolGrades K–12 | Grades K–12 | 77 | – |
NCES · EDFacts · graded within MO on state tests and graduation
Lake St. Louis earns a C− for cost of living
The median property tax bill is $4,448, against $1,948 across Missouri, another input to its cost-of-living grade.
On the market in Lake St. Louis: a median 13 days to sell. Zillow values the typical Lake St. Louis home at about $433,000, up 1% in a year, 63% above the Missouri typical home. For Lake St. Louis, the median rent is $1,588 a month.
| Lake St. Louis | Missouri towns | U.S. towns | |
|---|---|---|---|
| Median rent | $1,588 a month | $970 a month | $1,185 a month |
| Households that own their home | 76% | 64% | 73% |
Typical home value
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
Lake St. Louis stands out in Missouri and nationally, with fewer of its adults who feel lonely
Its widest gap with Missouri is tooth loss: 7.2% of those 65+ have lost all their teeth, against 15.8% statewide. Against the 4,988 U.S. towns with household incomes like Lake St. Louis’s, it is healthier than 52%, a smaller edge than it has nationally: part of it comes with its incomes.
In Lake St. Louis, 5.6% of adults 18 to 64 have no health insurance. Among adults in the town, 14% report frequent mental distress and 11% smoke cigarettes.
| Lake St. Louis | Missouri towns | U.S. towns | |
|---|---|---|---|
| Feel lonely (CDC PLACES) | 27% | 32% | 33% |
| Frequent mental distress (CDC PLACES) | 14% | 19% | 17% |
| Smoke cigarettes (CDC PLACES) | 11% | 17% | 14% |
| Fair or poor health (CDC PLACES) | 15% | 22% | 19% |
| What stands out | Lake St. Louis | MO |
|---|---|---|
| Fewer older adults who have lost all their teeth | 7.2% | 15.8% |
| Fewer adults facing food insecurity | 7.1% | 13.7% |
| More adults who have had cancer | 10.4% | 8.6% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Lake St. Louis reports less crime per resident than four in five U.S. towns
At 7.9 crimes per 1,000 residents a year, it reports less crime than 96% of Missouri’s graded towns. Violent crime is rare: 20 reported in 2025, 1 per 1,000 residents.
Only 6 of the 170 Missouri towns we compare have a lower rate of thefts and burglaries than Lake St. Louis. The violent crime rate for Lake St. Louis comes to 1 per 1,000 residents.
| Lake St. Louis | Missouri towns | U.S. towns | |
|---|---|---|---|
| Property crimes per 1,000 (2025) | 3.1 per 1,000 residents | 12.5 | 9.9 |
| Violent crimes per 1,000 (2025) | 1 per 1,000 residents | 2.3 | 1.6 |
Violent crime per 1,000 residents
Property crime per 1,000 residents
FBI crime data, 2025 · crimes reported to police
Four seasons and hot summers: that is Lake St. Louis’ year
Summer afternoons peak near 88° in July, and January nights bottom out around 22°; snowfall runs to about 14 inches a winter. Lake St. Louis brings chilly winters and warm summers.
Typical low → high °F
NOAA U.S. Climate Normals, 1991–2020
Most working residents commute out of Lake St. Louis
Lake St. Louis has about as many jobs (7,860) as working residents, but only 406 people both live and work here. Jobs based here grew from 4,271 in 2013 to 7,860.
For working residents in Lake St. Louis, the share who work locally is 4.9%. Employers in Lake St. Louis added 3,589 jobs between 2013 and 2023, to 7,860. The top destinations are O'Fallon (12%), Wentzville (8%) and Chesterfield (7%). The median commute is under 18 miles.
| Lake St. Louis | Missouri towns | U.S. towns | |
|---|---|---|---|
| Median household income | $126,000 | $62,000 | $80,000 |
| Work from home | 22% | 9% | 11% |
| Below the poverty line | 4.3% | 14% | 9.6% |
| Working residents who work in town | 4.9% | 13% | 8% |
Where working residents work
Census LEHD 2023 · ACS
Moderate risk in Lake St. Louis, with inland flooding at the top
Expected damage from storms and floods is higher here than in 54% of U.S. communities. Lake St. Louis has had 5 paid flood insurance claims since 1982. Households locally have drawn federal disaster aid in 4 declared disasters, most recently in 2022.
FEMA flood insurance claims · FEMA disaster declarations and aid · FEMA National Risk Index · OpenFEMA
Cahokia and 52 more within 40 miles
Museums, parks, gardens and other places to visit around Lake St. Louis. Close and well known come first.
Big draw40 mi State parkCahokia
Big draw34 mi Stadium & arenaThe Dome at America's Center
19 mi Theme parkMid America Adventure
34 mi Stadium & arenaBusch Stadium
34 mi National ParkGateway Arch National Park2.2M visitors a year
40 mi LandmarkMonks MoundPhoto credits
Cahokia: Thank You (24 Millions ) views, CC BY 2.0 · The Dome at America's Center: Paul Sableman, CC BY 2.0 · Mid America Adventure: Chris Hagerman from New Port Richey, FL, US, CC BY 2.0 · Busch Stadium: Lee Ann Ratledge, CC BY 4.0 · Gateway Arch National Park: Daniel Schwen, CC BY-SA 4.0 · Monks Mound: Skubasteve834, CC BY-SA 3.0
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Everything we know about Lake St. Louis
Colleges nearby
3 within 15 miles of the center of Lake St. Louis
About 6 of every 100 Lake St. Louis residents are enrolled in college, about the same as Missouri.
About Lake St. Louis
City in Missouri, United States
The City of Lake St. Louis is a planned community and suburb of greater St. Louis, situated around two lakes between Interstate 70 and Interstate 64 in western St. Charles County, Missouri, United States. The population was 16,707 as of the 2020 US Census. Lake St. Louis is 43 miles (69 km) from the city of St. Louis.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Established
- 1961
- Area
- 9.0 sq mi
- Elevation
- 564 ft
- ZIP code
- 63367
- Area code
- 636
Lake St. Louis’s neighbors
3 towns share a border with Lake St. Louis.
| Town | MO rank | Overall | Cost | Safety | Schools | Health |
|---|---|---|---|---|---|---|
| Lake St. Louis | #31 | A− | C− | A− | A | A− |
| Dardenne Prairie | #41 | A− | C− | — | A | A− |
| O'Fallon | #23 | A | C | A− | A | A− |
| Wentzville | #54 | A− | C | B | A | B+ |
Dardenne Prairie reports no FBI crime data of its own. Compare Lake St. Louis with a neighbor →
Questions about Lake St. Louis
Short answers, built from the data on this page.
Is Lake St. Louis, MO a good place to live?
For most people who can afford it, yes. Lake St. Louis grades A− overall, better than 84% of U.S. towns and #31 of 247 in Missouri. It grades A− for health, A− for safety and A for schools. Cost of living is its weak spot, with a C−.
Is Lake St. Louis, MO expensive?
Yes. Cost of living, which also weighs rents, property taxes and how many households pay 30% or more of their income for housing, grades C−.