Pest control · Lake St. Louis, Missouri
Pest control in Lake St. Louis, MO
Termites, ants, roaches, scorpions or rodents? 67% of Lake St. Louis's homes are detached houses[1], and 25% were built since 2010. Request a licensed pest-control company that services the area. Lake St. Louis, in St. Charles County — ZIP 63367, counts 19,129 residents (2025 estimate)[2].
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Lake St. Louis pest control snapshot: the key figures
- Population (2025 est.)
- 19,129[2]+14.4% since 2020
- County
- St. Charles[2]
- Land area
- 8.6 sq mi[3]
- Detached single-family homes
- 67%[1]the 6th-lowest share of the 15 St. Louis–area suburbs we cover
- Homes built 2010 or later
- 25%[1]the 2nd-highest share of the 15 St. Louis–area suburbs we cover
- People per square mile of land
- 2,233[2][3]the 6th-least dense of the 15 St. Louis–area suburbs we cover
- Households renting
- 24%[1]2020–2024
- Population change, 2020–2025
- +14.4%[2]the fastest-growing of the 15 St. Louis–area suburbs we cover
- Land area
- 8.6 sq mi[3]city limits
What the local data means for pest control in Lake St. Louis
Lake St. Louis is one of the fastest-growing St. Louis–metro suburbs tracked here: 19,129 people (2025 estimate), up 14.4% since 2020[2]. The city spans 8.6 square miles at 2,233 residents per square mile (the 10th densest) and sits entirely in St. Charles County, served by ZIP code 63367[3].
Building amid 14.4% growth since 2020 pushes construction into previously open land, which stirs up the pests already living there — and denser housing gives them more neighboring homes to visit.
The entire city sits in ZIP code 63367[4].
The closest tracked neighbours are O'Fallon (3.4 mi E), Wentzville (5.2 mi NW) and St. Peters (9.8 mi E)[3].
67% of Lake St. Louis's 7,657 housing units are detached houses[1] — the 6th-lowest share of the 15 St. Louis–area suburbs we cover; nearby, O'Fallon (75%), Wentzville (82%), and St. Peters (68%). With more attached housing, pests move between units — whole-building treatment matters more.
25% of homes were built in 2010 or later[1] (the 2nd-highest share of the 15 St. Louis–area suburbs we cover; O'Fallon (20%), Wentzville (40%), and St. Peters (12%) nearby), and population changed +14.4% from 2020 to 2025[2]. Many owners here can still check for a builder termite pre-treatment and warranty.
About 2,233 people live per square mile of land across 8.6 square miles[2][3] — the 6th-least dense of the 15 St. Louis–area suburbs we cover. More yard between houses puts the focus on the foundation perimeter and entry points.
24% of households rent and 76% own[1].
Among the 15 suburbs tracked here, Lake St. Louis stands out for the fastest growth since 2020 (14.4%)[2], the fewest flood reports nearby (5, tied with Wentzville)[5], and the 2nd-newest housing (by median year built) (2000, tied with O'Fallon)[1].
Finding pest control help around Lake St. Louis
Pest control contractors taking requests around Lake St. Louis cover ZIP code 63367.
Before you pick up the phone: choosing a pest-control plan
The Lake St. Louis numbers behind this page
| Measure | Lake St. Louis | Median of 15 | Difference |
|---|---|---|---|
| Growth since 2020 | 14.4% | -1.3% | 16 pts faster |
| Flood reports (10 mi) | 5 | 14 | 9 fewer |
| Residents per sq mi | 2,233 | 2,728 | 18% less dense |
| Detached single-family | 67% | 75% | 8 pts lower |
| Renter-occupied | 24% | 23% | 2 pts higher |
| Median year built | 2000 | 1977 | 23 years newer |
Biggest gaps first. Medians are middle values across the St. Louis–area suburbs we cover, drawn from the same sources.
| City | People / sq mi | Growth since 2020 | Population |
|---|---|---|---|
| Lake St. Louis | 2,233 | 14.4% | 19,129 |
| O'Fallon 3.4 mi | 3,101 | 5.2% | 96,101 |
| Wentzville 5.2 mi | 2,248 | 10.1% | 49,495 |
| St. Peters 9.8 mi | 2,728 | 6.5% | 61,479 |
| Chesterfield 14.1 mi | 1,550 | -1.4% | 49,309 |
| St. Charles 14.6 mi | 2,875 | 2.7% | 72,561 |
| Measure | Value |
|---|---|
| Housing units | 7,657 |
| Detached single-family | 5,118 (67%) |
| Occupied homes | 7,351 |
| Owner-occupied | 5,559 (76%) |
| Renter-occupied | 1,792 (24%) |
| Median home value | $405,900 |
ACS 2020–2024 estimates.
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 747 | 9.8% | ±216 |
| 2010 to 2019 | 1,133 | 14.8% | ±246 |
| 2000 to 2009 | 1,944 | 25.4% | ±298 |
| 1990 to 1999 | 1,177 | 15.4% | ±257 |
| 1980 to 1989 | 1,169 | 15.3% | ±246 |
| 1970 to 1979 | 1,151 | 15.0% | ±266 |
| 1960 to 1969 | 332 | 4.3% | ±183 |
| 1950 to 1959 | 4 | 0.1% | ±7 |
| 1940 to 1949 | 0 | 0.0% | ±19 |
| 1939 or earlier | 0 | 0.0% | ±19 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| ZIP (ZCTA) | Share of Lake St. Louis's land | Share of the ZIP inside the city |
|---|---|---|
| 63367 | 98% | 65% |
Lake St. Louis pest control questions
My Lake St. Louis home is new — do I need termite protection?
Check your closing documents for a builder termite pre-treatment and warranty first. 25% of Lake St. Louis homes were built in 2010 or later[1].
I rent in Lake St. Louis. Who pays for pest control?
Your lease decides. 24% of Lake St. Louis households rent[1].
Which areas does this page cover?
ZIP 63367[4], St. Charles County. Nearest suburbs with their own pages: O'Fallon (3.4 mi), Wentzville (5.2 mi), and St. Peters (9.8 mi)[3].
My Lake St. Louis home is fairly new — could the termite pre-treatment still be under warranty?
Possibly: 25% of Lake St. Louis's housing units were built in 2010 or later[1], the 2nd-highest share of the 15 St. Louis–area suburbs we cover. Check your closing paperwork for warranties before paying for a repair.
Sources
- Census ACS 2020–2024 5-year (keyless bulk)
- Census population estimates, Vintage 2025
- Census Gazetteer 2025
- Census 2020 ZCTA–place file
- NOAA Storm Events Database
Data pulled Sep 28, 2026. Full citations and method.