Lake Saint Louis ZIP Code List — Saint Charles County, MO

There is one unique ZIP code in Lake Saint Louis, Missouri and it is 63367. Area code: 636.

ZIP codes

12.95

sq mi land

0.81

sq mi water

636

area code

Lake Saint Louis, MO ZIP code map

About Lake Saint Louis, MO

Lake Saint Louis, Missouri, is a charming city nestled in Saint Charles County. It combines a peaceful residential atmosphere with access to beautiful lakes and recreational areas. This tight-knit community offers a blend of modern amenities and natural beauty, making it an appealing place to live or visit.

Location & geography

Lake Saint Louis is strategically located just northwest of St. Louis, Missouri, and it is surrounded by a picturesque landscape. Nearby cities include Wentzville, located 5 miles to the west, O'Fallon, which is about 10 miles to the southeast, and both Chesterfield and Ballwin, approximately 20 miles away. Covering a total area of 12.95 square miles, the city boasts 0.81 square miles of water, providing residents and visitors with enjoyable waterfront activities.

Community & economy

The character of Lake Saint Louis is defined by its family-friendly environment and strong community spirit. Predominantly residential, the local economy is supported by retail, service-oriented businesses, and recreational industries that cater to both locals and tourists. Daily life here often revolves around community events and outdoor activities, with parks and lakes offering vibrant spaces for recreation.

Transportation

Major transportation routes in Lake Saint Louis include Interstate 70, which provides easy access to the greater St. Louis area and beyond. The nearest major airport is Lambert-St. Louis International Airport, located about 30 miles to the southeast, ensuring convenient travel options. Public transit options are limited, but the proximity to larger urban centers offers residents connectivity to various transit services.

History

Lake Saint Louis was developed as a planned community in the 1970s, initially centered around its beautiful lakes. Over the years, it has evolved into a thriving residential area known for its scenic surroundings and recreational opportunities. The growth of local industries and residential developments has significantly contributed to the city’s prosperity and appeal.

Did you know?

A surprising fact about Lake Saint Louis is that it features two lakes, which are at the heart of the city's recreational offerings. Additionally, it is known for its annual events that unite the community and celebrate local culture.

ZIP codes for Lake Saint Louis, MO (1)

ZIP code	City	County	Map
63367	Lake Saint Louis	Saint Charles	View map

Demographics & statistics

27,371

Population

39.8

Median age

$131,657

Median household income

$54,985

Per capita income

$362,000

Median home value

$1,443

Median monthly rent

83.8%

Home ownership

2.3%

Poverty rate

3.5%

Unemployment

8,731

Housing units

49.2%

Bachelor's or higher

Age distribution

Male Female

679

Under 5

673

1,023

5–9

1,014

907

10–14

898

1,076

15–19

1,066

738

20–24

731

1,367

25–34

1,354

2,141

35–44

2,122

1,845

45–54

1,828

723

55–59

716

940

60–64

931

1,255

65–74

1,244

900

75–84

891

155

85+

154

← Male

Female →

Age summary

Group	Count	%
Under 18	6,672	24.4%
18 and over	20,699	75.6%
65 and over	4,599	16.8%
Median age	39.8 years

Race & ethnicity

White 83.9%

Black or African American 5.2%

Two or more races 4.9%

Hispanic or Latino 3.5%

Asian 1.7%

Other race 0.9%

American Indian / Alaska Native 0.1%

Group	Count	%
White	23,789	83.9%
Black or African American	1,466	5.2%
Two or more races	1,378	4.9%
Hispanic or Latino	998	3.5%
Asian	476	1.7%
Other race	247	0.9%
American Indian / Alaska Native	15	0.1%

Household income

Under $10k 1.9%

$10k–$15k 0.5%

$15k–$25k 2.0%

$25k–$35k 2.3%

$35k–$50k 8.7%

$50k–$75k 10.1%

$75k–$100k 11.3%

$100k–$150k 23.2%

$150k–$200k 18.9%

$200k+ 21.2%

Range	% of households
Under $10k	1.9%
$10k–$15k	0.5%
$15k–$25k	2.0%
$25k–$35k	2.3%
$35k–$50k	8.7%
$50k–$75k	10.1%
$75k–$100k	11.3%
$100k–$150k	23.2%
$150k–$200k	18.9%
$200k+	21.2%
Median income	$131,657

Housing

Home values

Under $50k 0.8%

$50k–$100k 2.3%

$100k–$150k 1.1%

$150k–$200k 4.4%

$200k–$300k 23.6%

$300k–$500k 49.4%

$500k–$1M 17.6%

$1M+ 0.8%

Housing overview

Metric	Value
Median home value	$362,000
Median rent / month	$1,443
Owner occupied	83.8%
Renter occupied	16.2%
Vacant	1.9%
Single-family detached	76.6%
Large apartment buildings	1.6%
Mobile homes	0.0%
Median rooms	7.1
Avg household size (owned)	2.76

Year built

Era	%
2020 or later	3.5%
2010–2019	24.4%
2000–2009	29.9%
1990–1999	13.5%
1980–1989	12.4%
1970–1979	12.7%
1960–1969	3.2%
1950–1959	0.2%
1940–1949	0.0%
1939 or earlier	0.2%

Bedrooms

Size	% of units
No bedroom (studio)	0.5%
1 bedroom	4.6%
2 bedrooms	17.9%
3 bedrooms	36.0%
4 bedrooms	33.3%
5+ bedrooms	7.7%

Vehicles per household

Vehicles	% of households
No vehicle	1.5%
1 vehicle	19.4%
2 vehicles	49.7%
3 or more	29.4%

Heating fuel

Fuel type	%
Utility gas	67.1%
Electricity	30.3%
Propane / LP gas	2.0%
Fuel oil	0.5%

Households & families

Household type	Count	%
Married-couple family	7,014	68.9%
Cohabiting couple	662	6.5%
Male householder, no spouse	818	8.0%
Female householder, no spouse	1,683	16.5%
Households with children under 18	3,747	36.8%
Households with seniors (65+)	3,042	29.9%
Average household size	2.69

Marital status

Status	Male	Female
Never married	27.0%	19.4%
Married	65.0%	61.9%
Separated	1.3%	0.2%
Widowed	1.1%	6.1%
Divorced	5.6%	12.4%

Education

Less than 9th grade 0.4%

Some HS, no diploma 2.3%

HS graduate 18.1%

Some college, no degree 21.0%

Associate's degree 9.1%

Bachelor's degree 31.4%

Graduate / professional 17.8%

Metric	%
HS diploma or higher	97.3%
Bachelor's or higher	49.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	728	9.9%
Kindergarten	369	5.0%
Elementary school	2,926	39.8%
High school	2,039	27.7%
College / grad school	1,297	17.6%

Employment

Industry of employment

Education & healthcare 21.3%

Professional & management 13.6%

Retail trade 13.5%

Finance & real estate 11.5%

Manufacturing 10.7%

Construction 7.7%

Arts, food & hospitality 6.2%

Public administration 4.1%

Other services 3.3%

Transportation & utilities 3.1%

Wholesale trade 3.0%

Information 1.3%

Agriculture & mining 0.6%

Occupation

Category	%
Management, business & arts	48.5%
Service	11.6%
Sales & office	24.7%
Natural resources & construction	6.1%
Production & transportation	9.1%

Employment type

Type	%
Private sector	87.1%
Government	9.6%
Self-employed	3.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	73.7%
Carpool	5.1%
Public transit	0.0%
Walk	0.3%
Other means	0.7%
Avg commute (minutes)	26.5

Poverty

All people 2.3%

Under 18 years 0.7%

18 and over 2.9%

Married-couple families 2.6%

Female-led households 6.3%

Income support

Source	% of households
Social Security	29.0%
Retirement income	28.4%
Supplemental Security	2.7%
Cash public assistance	2.1%
Food stamps / SNAP	1.3%

Health indicators

Condition	%
High blood pressure	26.5%
High cholesterol	32.5%
Heart disease	5.4%
Stroke	2.4%
Asthma	8.5%
Arthritis	23.4%
Kidney disease	2.3%
Pulmonary disease	5.5%
Cancer	6.5%

Behavior / access	%
Binge drinking	20.6%
No physical activity	20.1%
Less than 7 hrs sleep	31.7%
Fair or poor health	11.0%
Poor mental health	13.8%
Poor physical health	8.7%
No health insurance	11.5%
Visited doctor (checkup)	74.0%
Visited dentist	68.0%
Cholesterol screening	90.5%
Teeth loss	10.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,763	8.5%

Disability	%
Any disability	10.3%
Under 18	4.1%
18–64 years	7.4%
65 and over	29.3%

Health insurance coverage

Type	%
Private insurance	86.9%
Public insurance	20.5%
Uninsured under 19	1.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	26,019	95.1%
Spanish	155	0.6%
Other Indo-European	81	0.3%
Asian & Pacific Islander	41	0.2%
Other languages	24	0.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	26,357	96.3%
Born in same state	26,171	95.6%
Born in different state	17,790	65.0%
Foreign born	186	0.7%
Naturalized citizen	1,014	3.7%
Not a US citizen	699	68.9%

Ancestry

Ancestry	Count	%
Italian	5,030	18.4%
French	3,901	14.3%
Arab	1,621	5.9%
English	152	0.6%
Polish	147	0.5%

Ancestry	Count	%
Irish	128	0.5%
Norwegian	54	0.2%
German	47	0.2%
Dutch	20	0.1%

Technology access

Metric	% of households
Computer access	37.2%
Internet access	98.6%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What is the ZIP code for Lake Saint Louis, MO?

Lake Saint Louis, MO has one ZIP code: 63367.

What is the main ZIP code for Lake Saint Louis, MO?

The primary ZIP code for Lake Saint Louis, MO is 63367. The city uses area code 636 for phone service.

What county is Lake Saint Louis, MO in?

Lake Saint Louis is located in Saint Charles County, Missouri.

How many ZIP codes are in Lake Saint Louis, MO?

Lake Saint Louis, MO has 1 ZIP code.

What ZIP code covers the downtown Lake Saint Louis area and the Lakeside shopping district?

The downtown Lake Saint Louis area and Lakeside shopping district are located in ZIP code 63367, which is the primary commercial and residential hub of the city.

What is the ZIP code for residents living near Lake Saint Louis's main recreational areas and lakefront properties?

Properties near Lake Saint Louis's lakefront and recreational areas, including the city's parks and waterfront developments, are served by ZIP code 63367.