63368 ZIP Code — O Fallon, MO
Saint Charles County, Missouri
ZIP code 63368 is located in O Fallon, Missouri, within Saint Charles County. It covers approximately 16.22 square miles and serves a population of 46,124 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 636.
About ZIP code 63368
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $298,200. Owner-occupancy is high at 83%, well above the national average.
Median household income is $116,471. The poverty rate of 4% is below the national average.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 26 minutes is near the national average.
Educational attainment is high — 49% of residents hold a bachelor's degree or higher, well above the national average of 33%.
46,124
population
16.22
sq mi land
Standard
ZIP type
Central (CT)
timezone
63368 ZIP code map
Cities in ZIP code 63368
Below are the cities the US Postal Service accepts for ZIP code 63368. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| O Fallon | Acceptable |
| O Fallon | Preferred |
Nearby ZIP codes
63367 Lake Saint Louis (3.2 mi)
63304 Saint Charles (4.8 mi)
63304 Saint Charles (4.8 mi)
63304 Saint Charles (4.8 mi)
63341 Defiance (6.4 mi)
63385 Wentzville (6.4 mi)
63385 Wentzville (6.4 mi)
63376 Saint Peters (7.1 mi)
63376 Saint Peters (7.1 mi)
63376 Saint Peters (7.1 mi)
63366 O Fallon (7.6 mi)
63366 O Fallon (7.6 mi)
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 46,124 |
| Population density | 2,844 / sq mi |
| State FIPS | 29 |
| County FIPS | 183 |
| Geography | |
|---|---|
| Land area | 16.22 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 38.7476 |
| Longitude | -90.7428 |
| Timezone | Central (CT) |
| Area code | 636 |
Total population by age
Gender
Race & ethnicity
Economics
updated 06/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 19.2% | 24.9% | 43.8% |
| $50k – $100k | 27.0% | 32.4% | 31.5% |
| $100k – $200k | 40.4% | 33.0% | 19.5% |
| Over $200k | 13.4% | 9.7% | 5.2% |
Demographics & statistics
46,124
Population
2,844
People per sq mi
37.4
Median age
$116,471
Median household income
$49,227
Per capita income
$298,200
Median home value
$1,385
Median monthly rent
82.5%
Home ownership
3.6%
Poverty rate
2.9%
Unemployment
14,280
Housing units
48.9%
Bachelor's or higher
Age distribution
Male
Female
1,508
Under 5
1,553
1,579
5–9
1,626
1,676
10–14
1,726
1,617
15–19
1,666
1,096
20–24
1,129
3,093
25–34
3,185
2,948
35–44
3,036
3,268
45–54
3,366
1,690
55–59
1,740
1,359
60–64
1,399
1,577
65–74
1,624
1,022
75–84
1,053
290
85+
298
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 12,036 | 26.1% |
| 18 and over | 34,088 | 73.9% |
| 65 and over | 5,864 | 12.7% |
| Median age | 37.4 years | |
Race & ethnicity
White
82.7%
Asian
5.3%
Two or more races
4.2%
Black or African American
3.9%
Hispanic or Latino
2.6%
Other race
1.2%
American Indian / Alaska Native
0.1%
Native Hawaiian / Pacific Islander
0.1%
| Group | Count | % |
|---|---|---|
| White | 39,151 | 82.7% |
| Asian | 2,525 | 5.3% |
| Two or more races | 1,979 | 4.2% |
| Black or African American | 1,845 | 3.9% |
| Hispanic or Latino | 1,238 | 2.6% |
| Other race | 554 | 1.2% |
| American Indian / Alaska Native | 36 | 0.1% |
| Native Hawaiian / Pacific Islander | 34 | 0.1% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 19.2% | 24.9% | 43.8% |
| $50k – $100k | 27.0% | 32.4% | 31.5% |
| $100k – $200k | 40.4% | 33.0% | 19.5% |
| Over $200k | 13.4% | 9.7% | 5.2% |
Under $10k
1.4%
$10k–$15k
1.2%
$15k–$25k
2.9%
$25k–$35k
3.8%
$35k–$50k
8.1%
$50k–$75k
10.9%
$75k–$100k
14.5%
$100k–$150k
23.5%
$150k–$200k
17.5%
$200k+
16.4%
| Range | % of households |
|---|---|
| Under $10k | 1.4% |
| $10k–$15k | 1.2% |
| $15k–$25k | 2.9% |
| $25k–$35k | 3.8% |
| $35k–$50k | 8.1% |
| $50k–$75k | 10.9% |
| $75k–$100k | 14.5% |
| $100k–$150k | 23.5% |
| $150k–$200k | 17.5% |
| $200k+ | 16.4% |
| Median income | $116,471 |
Housing
Home values
Under $50k
4.7%
$50k–$100k
0.5%
$100k–$150k
2.2%
$150k–$200k
9.4%
$200k–$300k
33.9%
$300k–$500k
41.2%
$500k–$1M
7.9%
$1M+
0.2%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $298,200 |
| Median rent / month | $1,385 |
| Owner occupied | 82.5% |
| Renter occupied | 17.5% |
| Vacant | 2.3% |
| Single-family detached | 73.9% |
| Large apartment buildings | 5.7% |
| Mobile homes | 3.8% |
| Median rooms | 7.0 |
| Avg household size (owned) | 2.80 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.6% |
| 2010–2019 | 11.9% |
| 2000–2009 | 35.8% |
| 1990–1999 | 36.9% |
| 1980–1989 | 8.8% |
| 1970–1979 | 3.5% |
| 1960–1969 | 0.6% |
| 1950–1959 | 0.3% |
| 1940–1949 | 0.1% |
| 1939 or earlier | 1.4% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 1.4% |
| 1 bedroom | 4.3% |
| 2 bedrooms | 15.5% |
| 3 bedrooms | 37.7% |
| 4 bedrooms | 34.8% |
| 5+ bedrooms | 6.2% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 3.7% |
| 1 vehicle | 22.3% |
| 2 vehicles | 45.4% |
| 3 or more | 28.5% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 73.3% |
| Electricity | 25.2% |
| Propane / LP gas | 0.6% |
| Fuel oil | 0.1% |
| Solar | 0.1% |
| No fuel used | 0.4% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 10,689 | 63.5% |
| Cohabiting couple | 928 | 5.5% |
| Male householder, no spouse | 2,033 | 12.1% |
| Female householder, no spouse | 3,181 | 18.9% |
| Households with children under 18 | 6,777 | 40.3% |
| Households with seniors (65+) | 4,119 | 24.5% |
| Average household size | 2.73 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 28.1% | 24.5% |
| Married | 61.9% | 57.7% |
| Separated | 0.9% | 1.1% |
| Widowed | 2.7% | 6.9% |
| Divorced | 6.4% | 9.7% |
Education
Less than 9th grade
1.2%
Some HS, no diploma
2.5%
HS graduate
18.3%
Some college, no degree
20.2%
Associate's degree
8.9%
Bachelor's degree
30.5%
Graduate / professional
18.4%
| Metric | % |
|---|---|
| HS diploma or higher | 96.3% |
| Bachelor's or higher | 48.9% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 810 | 6.7% |
| Kindergarten | 678 | 5.6% |
| Elementary school | 5,116 | 42.6% |
| High school | 2,928 | 24.4% |
| College / grad school | 2,489 | 20.7% |
Employment
Industry of employment
Education & healthcare
20.2%
Professional & management
13.2%
Finance & real estate
12.8%
Retail trade
11.4%
Manufacturing
10.5%
Arts, food & hospitality
8.2%
Construction
7.4%
Transportation & utilities
4.2%
Other services
3.7%
Public administration
3.2%
Wholesale trade
3.1%
Information
1.7%
Agriculture & mining
0.4%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 51.3% |
| Service | 13.3% |
| Sales & office | 21.3% |
| Natural resources & construction | 5.5% |
| Production & transportation | 8.7% |
Employment type
| Type | % |
|---|---|
| Private sector | 85.8% |
| Government | 9.7% |
| Self-employed | 4.3% |
| Unpaid family workers | 0.2% |
Commute
| Method | % |
|---|---|
| Drive alone | 78.7% |
| Carpool | 5.2% |
| Public transit | 0.0% |
| Walk | 0.6% |
| Work from home | 14.0% |
| Other means | 1.6% |
| Avg commute (minutes) | 26.4 |
Poverty
All people
3.6%
Under 18 years
4.1%
18 and over
3.4%
Married-couple families
1.8%
Female-led households
7.8%
Income support
| Source | % of households |
|---|---|
| Social Security | 24.7% |
| Retirement income | 25.8% |
| Supplemental Security | 1.4% |
| Cash public assistance | 0.6% |
| Food stamps / SNAP | 3.5% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 30.1% |
| High blood pressure | 23.2% |
| High cholesterol | 29.7% |
| Diabetes | 6.5% |
| Heart disease | 4.3% |
| Stroke | 1.9% |
| Asthma | 8.4% |
| Arthritis | 20.1% |
| Kidney disease | 1.9% |
| Pulmonary disease | 4.5% |
| Cancer | 5.5% |
| Behavior / access | % |
|---|---|
| Smoking | 14.6% |
| Binge drinking | 21.8% |
| No physical activity | 18.6% |
| Less than 7 hrs sleep | 32.2% |
| Depression | 22.3% |
| Fair or poor health | 9.5% |
| Poor mental health | 13.9% |
| Poor physical health | 7.7% |
| No health insurance | 11.1% |
| Visited doctor (checkup) | 72.6% |
| Visited dentist | 69.2% |
| Cholesterol screening | 90.2% |
| Teeth loss | 9.9% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 2,196 | 6.4% |
| Disability | % |
|---|---|
| Any disability | 8.7% |
| Under 18 | 3.3% |
| 18–64 years | 6.7% |
| 65 and over | 29.8% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 86.0% |
| Public insurance | 17.4% |
| No insurance | 4.1% |
| Uninsured under 19 | 4.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 43,063 | 93.4% |
| Spanish | 986 | 2.3% |
| Other Indo-European | 297 | 0.7% |
| Asian & Pacific Islander | 221 | 0.5% |
| Other languages | 453 | 1.1% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 43,255 | 93.8% |
| Born in same state | 42,990 | 93.2% |
| Born in different state | 30,959 | 67.1% |
| Foreign born | 265 | 0.6% |
| Naturalized citizen | 2,869 | 6.2% |
| Not a US citizen | 1,411 | 49.2% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 6,619 | 14.4% |
| French | 4,917 | 10.7% |
| Arab | 2,136 | 4.6% |
| English | 371 | 0.8% |
| Polish | 371 | 0.8% |
| Ancestry | Count | % |
|---|---|---|
| German | 281 | 0.6% |
| Irish | 107 | 0.2% |
| Norwegian | 94 | 0.2% |
| Dutch | 19 | 0% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 36.5% |
| Internet access | 96.9% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 63368
What city is ZIP code 63368 in?
ZIP code 63368 is primarily assigned to O Fallon, Missouri.
What county is ZIP code 63368 in?
ZIP code 63368 falls within Saint Charles County, Missouri.
Is ZIP code 63368 mostly owner-occupied?
83% of occupied units in ZIP code 63368 are owner-occupied, well above the national average.
How educated is the population of ZIP code 63368?
49% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
What is the median household income in ZIP code 63368?
The median household income in ZIP code 63368 is $116,471, above the national median of ~$75,000.
What is the population of ZIP code 63368?
ZIP code 63368 has an estimated population of 46,124 residents, with a density of 2,844 people per square mile.
What timezone is ZIP code 63368 in?
ZIP code 63368 observes the CST timezone.