Barnhart ZIP Code List — Jefferson County, MO

There is one unique ZIP code in Barnhart, Missouri and it is 63012. Area code: 636.

ZIP codes

25.14

sq mi land

0.16

sq mi water

636

area code

Barnhart, MO ZIP code map

About Barnhart, MO

Barnhart, Missouri, is a charming city situated in the heart of Jefferson County. Known for its friendly community and suburban feel, this small city offers a peaceful retreat from the hustle and bustle of urban life. Barnhart provides residents with a close-knit environment while still being within reach of larger cities.

Location & geography

Barnhart lies approximately 25 miles south of St. Louis, making it a convenient location for those who work in the metropolitan area. Neighboring cities like Crystal City, approximately 5 miles to the northwest, and Arnold, about 10 miles to the northeast, offer additional amenities and services. The total land area of Barnhart is 25.14 square miles, complemented by a water area of 0.16 square miles.

Community & economy

The character of Barnhart is defined by its welcoming atmosphere and strong community values. Predominantly residential, the city features a mix of family-owned businesses and larger retail establishments that cater to local needs. Daily life in Barnhart is characterized by community events and recreational activities, promoting engagement among residents.

Transportation

Barnhart is conveniently accessed via major highways, including Interstate 55, which runs just to the east of the city. The closest major airport is St. Louis Lambert International Airport, located about 30 miles north. Public transportation options may be limited, but local transit services cater to basic commuting needs.

History

Barnhart was officially founded in the early 19th century, initially evolving as a small agricultural community. Key industries included farming and local services that supported the growing population. Notable events in its history reflect the development of the area into a suburban enclave as St. Louis expanded outward.

Did you know?

One surprising fact about Barnhart is that it is home to a variety of parks and outdoor facilities that support recreational activities for all ages. Additionally, the city's close proximity to the scenic Meramec River offers residents and visitors ample opportunities for water-based activities.

ZIP codes for Barnhart, MO (1)

ZIP code	City	County	Map
63012	Barnhart	Jefferson	View map

Demographics & statistics

10,763

Population

35.7

Median age

$96,294

Median household income

$42,658

Per capita income

$217,100

Median home value

$1,227

Median monthly rent

88.0%

Home ownership

5.3%

Poverty rate

1.9%

Unemployment

3,585

Housing units

26.4%

Bachelor's or higher

Age distribution

Male Female

496

Under 5

466

310

5–9

292

337

10–14

317

333

15–19

312

468

20–24

439

763

25–34

717

781

35–44

734

805

45–54

755

404

55–59

380

295

60–64

277

365

65–74

342

190

75–84

179

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	2,601	24.2%
18 and over	8,162	75.8%
65 and over	1,082	10.1%
Median age	35.7 years

Race & ethnicity

White 87.5%

Two or more races 6.4%

Hispanic or Latino 5.4%

Asian 0.4%

Black or African American 0.2%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
White	9,954	87.5%
Two or more races	726	6.4%
Hispanic or Latino	611	5.4%
Asian	44	0.4%
Black or African American	22	0.2%
Native Hawaiian / Pacific Islander	17	0.1%

Household income

Under $10k 2.0%

$10k–$15k 2.1%

$15k–$25k 2.2%

$25k–$35k 4.5%

$35k–$50k 4.9%

$50k–$75k 18.4%

$75k–$100k 17.6%

$100k–$150k 24.0%

$150k–$200k 13.7%

$200k+ 10.4%

Range	% of households
Under $10k	2.0%
$10k–$15k	2.1%
$15k–$25k	2.2%
$25k–$35k	4.5%
$35k–$50k	4.9%
$50k–$75k	18.4%
$75k–$100k	17.6%
$100k–$150k	24.0%
$150k–$200k	13.7%
$200k+	10.4%
Median income	$96,294

Housing

Home values

Under $50k 2.6%

$50k–$100k 3.3%

$100k–$150k 5.8%

$150k–$200k 31.6%

$200k–$300k 28.8%

$300k–$500k 24.5%

$500k–$1M 2.8%

$1M+ 0.6%

Housing overview

Metric	Value
Median home value	$217,100
Median rent / month	$1,227
Owner occupied	88.0%
Renter occupied	12.0%
Vacant	5.1%
Single-family detached	95.5%
Large apartment buildings	0.0%
Mobile homes	2.4%
Median rooms	6.3
Avg household size (owned)	2.82

Year built

Era	%
2020 or later	0.4%
2010–2019	6.1%
2000–2009	12.6%
1990–1999	20.8%
1980–1989	20.0%
1970–1979	26.2%
1960–1969	7.1%
1950–1959	5.4%
1940–1949	1.6%
1939 or earlier	0.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.3%
1 bedroom	1.0%
2 bedrooms	11.3%
3 bedrooms	57.9%
4 bedrooms	24.6%
5+ bedrooms	4.8%

Vehicles per household

Vehicles	% of households
No vehicle	2.2%
1 vehicle	15.2%
2 vehicles	49.8%
3 or more	32.8%

Heating fuel

Fuel type	%
Utility gas	47.5%
Electricity	38.8%
Propane / LP gas	7.7%
Wood	3.6%
Solar	1.8%
No fuel used	0.7%

Households & families

Household type	Count	%
Married-couple family	2,201	57.3%
Cohabiting couple	317	8.3%
Male householder, no spouse	609	15.9%
Female householder, no spouse	712	18.5%
Households with children under 18	1,553	40.5%
Households with seniors (65+)	844	22.0%
Average household size	2.79

Marital status

Status	Male	Female
Never married	31.3%	26.7%
Married	55.1%	50.7%
Separated	0.9%	1.7%
Widowed	2.1%	8.7%
Divorced	10.5%	12.3%

Education

Less than 9th grade 1.6%

Some HS, no diploma 3.1%

HS graduate 26.0%

Some college, no degree 23.5%

Associate's degree 19.6%

Bachelor's degree 17.8%

Graduate / professional 8.5%

Metric	%
HS diploma or higher	95.4%
Bachelor's or higher	26.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	387	15.4%
Kindergarten	147	5.9%
Elementary school	995	39.6%
High school	503	20.0%
College / grad school	480	19.1%

Employment

Industry of employment

Education & healthcare 21.2%

Manufacturing 18.2%

Professional & management 13.6%

Finance & real estate 11.2%

Construction 7.9%

Retail trade 7.2%

Other services 5.6%

Transportation & utilities 4.4%

Arts, food & hospitality 4.3%

Wholesale trade 2.8%

Information 2.2%

Public administration 1.3%

Agriculture & mining 0.2%

Occupation

Category	%
Management, business & arts	39.1%
Service	9.8%
Sales & office	23.5%
Natural resources & construction	14.5%
Production & transportation	13.1%

Employment type

Type	%
Private sector	86.7%
Government	7.8%
Self-employed	5.1%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	81.8%
Carpool	4.8%
Public transit	0.0%
Walk	0.5%
Other means	0.0%
Avg commute (minutes)	33.1

Poverty

All people 5.3%

Under 18 years 5.7%

18 and over 5.2%

Married-couple families 4.7%

Female-led households 5.5%

Income support

Source	% of households
Social Security	25.2%
Retirement income	23.2%
Supplemental Security	3.5%
Cash public assistance	0.0%
Food stamps / SNAP	5.6%

Health indicators

Condition	%
High blood pressure	24.7%
High cholesterol	32.2%
Heart disease	5.4%
Stroke	2.3%
Asthma	9.3%
Arthritis	24.2%
Kidney disease	2.2%
Pulmonary disease	6.5%
Cancer	5.8%

Behavior / access	%
Binge drinking	20.5%
No physical activity	22.3%
Less than 7 hrs sleep	34.3%
Fair or poor health	12.6%
Poor mental health	15.4%
Poor physical health	9.9%
No health insurance	13.8%
Visited doctor (checkup)	71.2%
Visited dentist	63.2%
Cholesterol screening	88.1%
Teeth loss	14.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	479	5.9%

Disability	%
Any disability	9.7%
Under 18	6.0%
18–64 years	5.8%
65 and over	44.5%

Health insurance coverage

Type	%
Private insurance	81.1%
Public insurance	21.4%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	9,801	91.1%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	10,633	98.8%
Born in same state	10,533	97.9%
Born in different state	9,196	85.4%
Foreign born	100	0.9%
Naturalized citizen	130	1.2%
Not a US citizen	130	100.0%

Ancestry

Ancestry	Count	%
Italian	2,306	21.4%
French	834	7.7%
Arab	432	4%

Ancestry	Count	%
English	148	1.4%
German	36	0.3%
Irish	30	0.3%

Technology access

Metric	% of households
Computer access	35.7%
Internet access	94.5%

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

Frequently asked questions

What is the ZIP code for Barnhart, MO?

Barnhart, MO has one ZIP code: 63012.

What is the main ZIP code for Barnhart, MO?

The primary ZIP code for Barnhart, MO is 63012. The city uses area code 636 for phone service.

What county is Barnhart, MO in?

Barnhart is located in Jefferson County, Missouri.

How many ZIP codes are in Barnhart, MO?

Barnhart, MO has 1 ZIP code.

What ZIP code should I use for mailing packages to businesses in downtown Barnhart near the Jefferson County area?

All mail to Barnhart, Missouri is delivered to ZIP code 63012, which covers the entire city including its commercial and residential areas.

If I'm relocating to a residential neighborhood in Barnhart, MO, what ZIP code will my address have?

Regardless of which neighborhood you move to within Barnhart, your address will use ZIP code 63012, as this is the sole ZIP code serving the entire city.