Featured local agent
Scott Brown — eXp Realty
Licensed in Missouri (#2021012672). Call or text for a direct answer on local listings, pricing, or new construction.
Call/text (707) 474-8855Lake St. Louis, MO · city
Lake St. Louis, Missouri houses and real estate market data.
Houses in Lake St. Louis, MO (St. Charles County) — market data for Lake St. Louis houses and the whole local market.
city · Census GEOID 2940043
🔥 FEATURED LISTING: WATERFRONT LAKE HOME FOR SALE
Clearlake Oaks Canal-Front Oasis
$374,999 • 3 Beds • 2 Baths • 1,204 Sq Ft
554 Keys, Clearlake Oaks, CA 95423
Luxury Living Lake Lifestyle – Deep Water Access to Clear Lake: PAID-OFF SOLAR • 10-Ft Concrete Seawall • Double Boat Lifts & Private Dock • Hot Tub • Mini-Split HVAC • Close to SF Bay / Wine Country • Cleanest Air in America (Lake County CA) • Spacious Patio and Deck • Open Floor Plan • RV/Boat Parking • Want the Boats? • Make Offer ASAP This Lake Home For Sale in California won't last!
*Listed by Scott Brown, EXP Realty, DRE #01956840. Inquiries delivered directly to listing agent. Search.USAHouses.com*
📩 Contact Agent Direct:
Scott Brown - EXP Realty
Scott@USAHouses.com
Call/Text (707) 474-8855
👉 Click Anywhere on Ad for More Info / Listing Page
Lake St. Louis, MO is a city in St. Charles County, Missouri — this guide covers houses in Lake St. Louis and the whole local market: resale homes, condos, land, and new construction.
Info from government sites and builders may have provided source info.
Open map pin ↗ · 38.77989, -90.785586
At a glance
Lake St. Louis market snapshot
Place type
city
County
St. Charles County
Map pin
38.77989, -90.785586
Census GEOID
2940043
Land area
8.55 sq mi
Market data compiled from public sources; deemed reliable but not guaranteed; verify independently. See About
Local resources
Get help buying or selling in Lake St. Louis
What can I afford?
Estimate a comfortable price range in under a minute, then connect with a lender for real numbers.
Rough estimate only (28% of income toward housing, ~6.5% illustrative rate, 30-year term) — not a loan offer or pre-qualification. Connect with a lender for real numbers →
Open
Advertise to local buyers
Lenders, inspectors, movers, and other local pros — this spot is open.
Advertise here →Why Lake St. Louis
What makes Lake St. Louis different
City
The U.S. Census Bureau lists Lake St. Louis as a city in St. Charles County, Missouri.
Nearby
Places around Lake St. Louis
County guide: St. Charles County — cities, market context, and local resources for the county that includes Lake St. Louis.
USAHouses.com also publishes Census place pages for other communities in the same county as Lake St. Louis.
Nearby communities include Josephville, O'Fallon, Dardenne Prairie, Wentzville, St. Paul, New Melle, Cottleville, Flint Hill, Weldon Spring Heights, Weldon Spring, Foristell, St. Peters, Defiance, St. Charles, Augusta, Portage Des Sioux.
Josephville market data
Nearby city · ~3.5 mi
O'Fallon market data
Nearby city · ~3.5 mi
Dardenne Prairie market data
Nearby city · ~4.6 mi
Wentzville market data
Nearby city · ~5.2 mi
St. Paul market data
Nearby city · ~5.3 mi
New Melle market data
Nearby city · ~6.7 mi
Cottleville market data
Nearby city · ~7.2 mi
Flint Hill market data
Nearby city · ~7.3 mi
Weldon Spring Heights market data
Nearby city · ~7.5 mi
Weldon Spring market data
Nearby city · ~8.7 mi
Foristell market data
Nearby city · ~9.6 mi
St. Peters market data
Nearby city · ~9.7 mi
Defiance market data
Nearby city · ~10.2 mi
St. Charles market data
Nearby city · ~14.6 mi
Augusta market data
Nearby city · ~15.4 mi
Portage Des Sioux market data
Nearby city · ~26.1 mi
Adjacent-county Census places with USAHouses.com pages: Chain of Rocks (~9.4 mi), Old Monroe (~10.8 mi), Fountain N' Lakes (~13.5 mi), Moscow Mills (~13.6 mi), Wright City (~13.9 mi), Chesterfield (~14.1 mi), Innsbrook (~14.5 mi), Winfield (~14.8 mi), Clarkson Valley (~14.9 mi), Wildwood (~15.4 mi), Troy (~16.4 mi), Ellisville (~16.9 mi), Maryland Heights (~17.5 mi), Marthasville (~17.9 mi), Ballwin (~18.0 mi), Champ (~18.1 mi).
Census & home facts
Lake St. Louis data from published sources
County FHFA annual change (2025)
4.8%
County median listing price (FRED/Realtor.com) (2026-06-01)
$428,950
Census place type
city
County
St. Charles County
Land area (Census Gazetteer 2024)
8.55 sq mi
Census GEOID
2940043
Census ACS, FHFA, and FRED figures are labeled with the year present in existing CSVs. Subject to change / confirm locally.
NewUSAHouses.com communities
Closest verified new-home communities near Lake St. Louis
Availability and pricing are controlled by the builder and may change; confirm with the builder.
New Homes Lake St Louis Mo Windsor Park ↗
Fischer & Frichtel · Lake Saint Louis, Missouri · ~0.6 mi
Dogwood Grove ↗
McBride Homes · Lake Saint Louis, Missouri · ~0.8 mi · from $290,000
Post Farms Enclave ↗
McBride Homes · O Fallon, Missouri · ~1.0 mi · from $380,000
Bluestem Estates ↗
McBride Homes · Lake Saint Louis, Missouri · ~1.0 mi · from $390,000
Hawk Ridge Estates ↗
McBride Homes · Lake Saint Louis, Missouri · ~1.0 mi · from $370,000
Reach Lake St. Louis buyers
Builders: feature your communities in front of Lake St. Louis buyers — learn about advertising ↗
Want to own this market? Ask about our Lake St. Louis domains — see available domains ↗
Common questions
Lake St. Louis FAQ
What kind of place is Lake St. Louis, MO?
The U.S. Census Bureau lists Lake St. Louis as a city in St. Charles County, Missouri.
Search Lake St. Louis
Look up homes in Lake St. Louis
Search USAHouses.com places, or open verified new construction on NewUSAHouses.com.
New construction in Missouri ↗Get connected
Find your Lake St. Louis new home
Prices, availability, and incentives change weekly and don't always make it onto this page. Tell us your area, budget, and timeline and we'll point you to communities that fit — including options we track but haven't published here yet.
Get connected in Lake St. LouisExplore more
Where to go next
Get the Lake St. Louis market guide
Tell us what you're looking for — buy, sell, both, invest, rent, or you're an agent, builder, vendor, or advertiser. Include where you want to buy or sell and your address if relevant, and we'll route you to the right resource.
Buyer · Seller · Both · Investor · Renter · Agent/Broker · New Home Builder · Vendor/Service Pro · Advertiser · Other
