Union City ZIP Codes — Darke County, OH

There is one unique ZIP code in Union City, Ohio and it is 45390. Area code: 937.

ZIP codes

53.55

sq mi land

0.12

sq mi water

937

area code

Union City, OH ZIP code map

About Union City, OH

Union City, Ohio, is a quaint village nestled in Darke County, known for its close-knit community and rich heritage. With a single ZIP code of 45390, Union City offers a charming blend of rural tranquility and small-town life. The village is a place where residents take pride in their environment and actively participate in local traditions and events.

Location & geography

Union City is located in the west-central part of Ohio, offering a unique landscape that combines agricultural fields with residential areas. It lies approximately 10 miles northwest of Greenville, 12 miles southeast of Winchester, Indiana, and 15 miles south of Celina. The town spans a land area of 53.55 square miles, with a modest water area of 0.12 square miles, making it primarily land-focused.

Community & economy

The character of Union City is defined by its hardworking residents and strong community bonds, fostering a welcoming atmosphere for newcomers and visitors alike. The local economy is supported by agricultural industries, small businesses, and various services that cater to the needs of the residents. Daily life in Union City revolves around community events, local festivals, and recreational activities that help to strengthen relationships among its residents.

Transportation

Union City is accessible via several major highways, including State Route 47, which connects the village to surrounding areas. The nearest named airport is the Darke County Airport, located approximately 10 miles away, providing residents with essential air travel options. Public transportation options are limited, so most residents rely on personal vehicles for their daily commutes and travel.

History

Union City was established in the early 19th century and has a rich history shaped by its agricultural roots and progress over the years. Notably, the village has contributed significantly to the local farming economy, with many historical events celebrating its heritage. Throughout its history, Union City has also witnessed the development of small businesses catering to both locals and visitors.

Did you know?

One surprising fact about Union City is that it shares its name with another Union City located across the state line in Indiana, emphasizing the regional ties between the two areas. Additionally, the village has a notable strong sense of community, reflected in various local events and gatherings that draw participants from neighboring towns.

ZIP codes for Union City, OH (1)

ZIP code	City	County	Map
45390	Union City	Darke	View map

Demographics & statistics

3,341

Population

37.3

Median age

$53,306

Median household income

$26,550

Per capita income

$95,300

Median home value

$741

Median monthly rent

71.4%

Home ownership

25.0%

Poverty rate

6.3%

Unemployment

1,055

Housing units

11.7%

Bachelor's or higher

Age distribution

Male Female

Under 5

182

5–9

150

125

10–14

103

142

15–19

117

20–24

244

25–34

200

257

35–44

211

199

45–54

163

117

55–59

132

60–64

109

171

65–74

140

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	789	23.6%
18 and over	2,552	76.4%
65 and over	497	14.9%
Median age	37.3 years

Race & ethnicity

White 85.5%

Two or more races 6%

Hispanic or Latino 4.8%

Asian 2.3%

Black or African American 1.3%

Group	Count	%
White	3,002	85.5%
Two or more races	211	6%
Hispanic or Latino	170	4.8%
Asian	80	2.3%
Black or African American	47	1.3%

Household income

Under $10k 4.4%

$10k–$15k 15.0%

$15k–$25k 10.3%

$25k–$35k 7.2%

$35k–$50k 11.9%

$50k–$75k 14.0%

$75k–$100k 13.2%

$100k–$150k 15.8%

$150k–$200k 4.4%

$200k+ 3.7%

Range	% of households
Under $10k	4.4%
$10k–$15k	15.0%
$15k–$25k	10.3%
$25k–$35k	7.2%
$35k–$50k	11.9%
$50k–$75k	14.0%
$75k–$100k	13.2%
$100k–$150k	15.8%
$150k–$200k	4.4%
$200k+	3.7%
Median income	$53,306

Housing

Home values

Under $50k 27.2%

$50k–$100k 24.4%

$100k–$150k 25.2%

$150k–$200k 8.5%

$200k–$300k 4.6%

$300k–$500k 7.5%

$500k–$1M 2.6%

Housing overview

Metric	Value
Median home value	$95,300
Median rent / month	$741
Owner occupied	71.4%
Renter occupied	28.6%
Vacant	10.9%
Single-family detached	78.5%
Large apartment buildings	0.1%
Mobile homes	10.7%
Median rooms	6.0
Avg household size (owned)	2.59

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	5.4%
1990–1999	5.4%
1980–1989	5.1%
1970–1979	28.8%
1960–1969	12.3%
1950–1959	12.6%
1940–1949	4.1%
1939 or earlier	26.3%

Bedrooms

Size	% of units
No bedroom (studio)	1.4%
1 bedroom	4.0%
2 bedrooms	29.9%
3 bedrooms	38.1%
4 bedrooms	22.1%
5+ bedrooms	4.5%

Vehicles per household

Vehicles	% of households
No vehicle	10.1%
1 vehicle	26.4%
2 vehicles	28.2%
3 or more	35.3%

Heating fuel

Fuel type	%
Utility gas	44.5%
Electricity	30.2%
Propane / LP gas	11.0%
Fuel oil	7.1%
Wood	7.0%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	599	47.5%
Cohabiting couple	103	8.2%
Male householder, no spouse	276	21.9%
Female householder, no spouse	284	22.5%
Households with children under 18	399	31.6%
Households with seniors (65+)	382	30.3%
Average household size	2.61

Marital status

Status	Male	Female
Never married	33.1%	24.4%
Married	46.3%	52.1%
Separated	2.4%	2.2%
Widowed	7.6%	10.1%
Divorced	10.6%	11.3%

Education

Less than 9th grade 5.1%

Some HS, no diploma 10.2%

HS graduate 48.7%

Some college, no degree 17.2%

Associate's degree 7.0%

Bachelor's degree 7.4%

Graduate / professional 4.3%

Metric	%
HS diploma or higher	84.6%
Bachelor's or higher	11.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	29	4.1%
Kindergarten	38	5.3%
Elementary school	417	58.6%
High school	143	20.1%
College / grad school	85	11.9%

Employment

Industry of employment

Manufacturing 34.6%

Education & healthcare 21.0%

Arts, food & hospitality 9.6%

Retail trade 6.7%

Transportation & utilities 6.4%

Construction 5.3%

Agriculture & mining 4.3%

Professional & management 2.8%

Wholesale trade 2.7%

Other services 2.2%

Finance & real estate 2.1%

Public administration 1.4%

Information 0.9%

Occupation

Category	%
Management, business & arts	21.6%
Service	19.0%
Sales & office	15.6%
Natural resources & construction	6.1%
Production & transportation	37.6%

Employment type

Type	%
Private sector	90.2%
Government	7.6%
Self-employed	2.2%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	71.3%
Carpool	16.3%
Public transit	0.5%
Walk	6.5%
Other means	0.5%
Avg commute (minutes)	20.8

Poverty

All people 25.0%

Under 18 years 41.6%

18 and over 19.8%

Married-couple families 10.5%

Female-led households 64.9%

Income support

Source	% of households
Social Security	32.3%
Retirement income	23.6%
Supplemental Security	11.6%
Cash public assistance	1.7%
Food stamps / SNAP	21.6%

Health indicators

Condition	%
High blood pressure	37.9%
High cholesterol	34.1%
Heart disease	9.0%
Stroke	4.2%
Asthma	10.8%
Arthritis	31.3%
Kidney disease	3.6%
Pulmonary disease	11.9%
Cancer	7.1%

Behavior / access	%
Binge drinking	16.4%
No physical activity	32.8%
Less than 7 hrs sleep	38.2%
Fair or poor health	20.6%
Poor mental health	17.8%
Poor physical health	13.9%
No health insurance	14.8%
Visited doctor (checkup)	77.7%
Visited dentist	53.7%
Cholesterol screening	87.1%
Teeth loss	21.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	163	6.4%

Disability	%
Any disability	15.3%
Under 18	7.5%
18–64 years	16.6%
65 and over	23.0%

Health insurance coverage

Type	%
Private insurance	63.7%
Public insurance	44.8%
Uninsured under 19	4.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,211	96.1%
Spanish	90	2.8%
Other Indo-European	10	0.3%
Asian & Pacific Islander	0	0.0%
Other languages	80	2.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,293	98.6%
Born in same state	3,293	98.6%
Born in different state	1,837	55.0%
Foreign born	0	0.0%
Naturalized citizen	48	1.4%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Arab	329	9.8%
Italian	268	8%
French	231	6.9%

Ancestry	Count	%
German	13	0.4%
English	12	0.4%
Polish	4	0.1%

Technology access

Metric	% of households
Computer access	37.8%
Internet access	88.3%

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

Frequently asked questions

What ZIP codes does Union City, OH have?

Union City, OH has one ZIP code: 45390. Each ZIP code serves a distinct delivery area within the city and surrounding region.