Union ZIP Codes — Franklin County, MO

There is one unique ZIP code in Union, Missouri and it is 63084. Area code: 636.

ZIP codes

76.26

sq mi land

0.07

sq mi water

636

area code

Union, MO ZIP code map

About Union, MO

Union, Missouri, is a charming city located within Franklin County. Known for its welcoming community and scenic landscapes, Union is a great place to live and explore. With a rich history and various local attractions, it offers both residents and visitors a unique glimpse into Midwestern life.

Location & geography

Union sits in east-central Missouri, approximately 40 miles southwest of St. Louis. Nearby cities include Washington, about 10 miles to the northwest, Gerald, roughly 12 miles to the southeast, and Hillsboro, which is located about 20 miles to the northeast. The city covers a land area of 76.26 square miles, with a negligible water area of 0.07 square miles.

Community & economy

The character of Union is marked by its friendly atmosphere and active community engagement. Local industries range from manufacturing to retail, providing ample job opportunities for residents. Daily life in Union includes community events, local dining options, and access to parks that promote a healthy, active lifestyle.

Transportation

Union is conveniently accessed via several key highways, including Highway 47 and Highway 50, which link it to surrounding areas. The nearest major airport is St. Louis Lambert International Airport, located about 50 miles away. Public transit options are limited, but the city's road networks facilitate easy travel by car.

History

Founded in the early 19th century, Union was established as a trading hub for nearby agricultural communities. The city's growth was significantly influenced by the arrival of the railroad in the 1860s, which spurred local industries. Throughout its history, Union has hosted several notable events that celebrate its heritage and community spirit.

Did you know?

One surprising fact about Union is that it is home to several annual festivals that attract visitors from across the region. These events highlight the city's vibrant culture and community involvement, making Union a lively destination in Franklin County.

ZIP codes for Union, MO (1)

ZIP code	City	County	Map
63084	Union	Franklin	View map

Demographics & statistics

20,071

Population

38.1

Median age

$69,079

Median household income

$31,014

Per capita income

$212,100

Median home value

$846

Median monthly rent

74.5%

Home ownership

6.2%

Poverty rate

6.8%

Unemployment

1,052

Housing units

19.6%

Bachelor's or higher

Age distribution

Male Female

674

Under 5

646

789

5–9

758

581

10–14

558

605

15–19

581

735

20–24

706

1,421

25–34

1,363

1,090

35–44

1,047

1,191

45–54

1,143

869

55–59

833

540

60–64

518

969

65–74

929

563

75–84

540

215

85+

207

← Male

Female →

Age summary

Group	Count	%
Under 18	4,784	23.8%
18 and over	15,287	76.2%
65 and over	3,423	17.1%
Median age	38.1 years

Race & ethnicity

White 84.1%

Two or more races 7.1%

Hispanic or Latino 6%

Black or African American 1.5%

Asian 0.9%

Other race 0.3%

Group	Count	%
White	17,965	84.1%
Two or more races	1,518	7.1%
Hispanic or Latino	1,288	6%
Black or African American	329	1.5%
Asian	185	0.9%
Other race	64	0.3%

Household income

Under $10k 2.6%

$10k–$15k 1.4%

$15k–$25k 9.8%

$25k–$35k 7.1%

$35k–$50k 13.8%

$50k–$75k 18.8%

$75k–$100k 14.4%

$100k–$150k 21.7%

$150k–$200k 6.2%

$200k+ 4.0%

Range	% of households
Under $10k	2.6%
$10k–$15k	1.4%
$15k–$25k	9.8%
$25k–$35k	7.1%
$35k–$50k	13.8%
$50k–$75k	18.8%
$75k–$100k	14.4%
$100k–$150k	21.7%
$150k–$200k	6.2%
$200k+	4.0%
Median income	$69,079

Housing

Home values

Under $50k 1.7%

$50k–$100k 3.4%

$100k–$150k 16.2%

$150k–$200k 22.4%

$200k–$300k 36.5%

$300k–$500k 15.0%

$500k–$1M 4.1%

$1M+ 0.6%

Housing overview

Metric	Value
Median home value	$212,100
Median rent / month	$846
Owner occupied	74.5%
Renter occupied	25.5%
Vacant	8.4%
Single-family detached	72.9%
Large apartment buildings	2.2%
Mobile homes	9.7%
Median rooms	5.8
Avg household size (owned)	2.76

Year built

Era	%
2020 or later	0.0%
2010–2019	12.7%
2000–2009	24.0%
1990–1999	18.0%
1980–1989	13.1%
1970–1979	8.1%
1960–1969	9.4%
1950–1959	5.7%
1940–1949	1.7%
1939 or earlier	7.2%

Bedrooms

Size	% of units
No bedroom (studio)	1.4%
1 bedroom	3.8%
2 bedrooms	23.9%
3 bedrooms	50.9%
4 bedrooms	15.9%
5+ bedrooms	4.1%

Vehicles per household

Vehicles	% of households
No vehicle	4.6%
1 vehicle	22.6%
2 vehicles	42.8%
3 or more	30.0%

Heating fuel

Fuel type	%
Utility gas	8.5%
Electricity	80.7%
Propane / LP gas	6.8%
Fuel oil	0.5%
Wood	2.2%
Solar	0.1%
No fuel used	1.0%

Households & families

Household type	Count	%
Married-couple family	4,115	54.5%
Cohabiting couple	730	9.7%
Male householder, no spouse	1,052	13.9%
Female householder, no spouse	1,656	21.9%
Households with children under 18	2,347	31.1%
Households with seniors (65+)	2,422	32.1%
Average household size	2.62

Marital status

Status	Male	Female
Never married	35.9%	22.6%
Married	53.0%	53.6%
Separated	0.5%	1.1%
Widowed	2.1%	11.5%
Divorced	8.5%	11.2%

Education

Less than 9th grade 2.8%

Some HS, no diploma 7.9%

HS graduate 38.9%

Some college, no degree 20.5%

Associate's degree 10.3%

Bachelor's degree 13.2%

Graduate / professional 6.4%

Metric	%
HS diploma or higher	89.3%
Bachelor's or higher	19.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	254	6.0%
Kindergarten	289	6.8%
Elementary school	2,094	49.1%
High school	881	20.6%
College / grad school	749	17.6%

Employment

Industry of employment

Manufacturing 22.4%

Education & healthcare 19.4%

Retail trade 14.3%

Construction 8.4%

Professional & management 7.5%

Arts, food & hospitality 6.7%

Public administration 5.5%

Transportation & utilities 4.7%

Other services 4.2%

Finance & real estate 3.7%

Wholesale trade 1.5%

Information 1.0%

Agriculture & mining 0.6%

Occupation

Category	%
Management, business & arts	29.5%
Service	17.2%
Sales & office	20.7%
Natural resources & construction	10.7%
Production & transportation	21.9%

Employment type

Type	%
Private sector	83.7%
Government	11.2%
Self-employed	4.8%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	77.8%
Carpool	13.5%
Public transit	0.4%
Walk	1.1%
Other means	0.9%
Avg commute (minutes)	26.4

Poverty

All people 6.2%

Under 18 years 7.3%

18 and over 5.8%

Married-couple families 1.4%

Female-led households 18.1%

Income support

Source	% of households
Social Security	35.2%
Retirement income	29.6%
Supplemental Security	5.8%
Cash public assistance	1.8%
Food stamps / SNAP	5.5%

Health indicators

Condition	%
High blood pressure	29.4%
High cholesterol	33.8%
Heart disease	6.3%
Stroke	2.9%
Asthma	9.6%
Arthritis	26.0%
Kidney disease	2.7%
Pulmonary disease	7.9%
Cancer	6.3%

Behavior / access	%
Binge drinking	18.1%
No physical activity	24.4%
Less than 7 hrs sleep	34.2%
Fair or poor health	15.0%
Poor mental health	16.2%
Poor physical health	11.2%
No health insurance	16.2%
Visited doctor (checkup)	72.2%
Visited dentist	61.7%
Cholesterol screening	87.0%
Teeth loss	16.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,093	7.2%

Disability	%
Any disability	13.2%
Under 18	2.1%
18–64 years	9.7%
65 and over	40.8%

Health insurance coverage

Type	%
Private insurance	74.0%
Public insurance	29.1%
Uninsured under 19	8.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	18,751	93.4%
Spanish	46	0.2%
Other Indo-European	12	0.1%
Asian & Pacific Islander	34	0.2%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	19,815	98.7%
Born in same state	19,749	98.4%
Born in different state	16,106	80.2%
Foreign born	66	0.3%
Naturalized citizen	256	1.3%
Not a US citizen	132	51.6%

Ancestry

Ancestry	Count	%
Italian	2,635	13.1%
French	1,671	8.3%
Arab	1,333	6.6%

Ancestry	Count	%
English	105	0.5%
Polish	57	0.3%
Irish	45	0.2%

Technology access

Metric	% of households
Computer access	37.6%
Internet access	94.0%

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

Frequently asked questions

What ZIP codes does Union, MO have?

Union, MO has one ZIP code: 63084. Each ZIP code serves a distinct delivery area within the city and surrounding region.