Union ZIP Codes — Hardin County, IA

There is one unique ZIP code in Union, Iowa and it is 50258. Area code: 641.
1
ZIP codes
53.97
sq mi land
0.18
sq mi water
641
area code
Union, IA ZIP code map

About Union, IA

Union is a small, charming city located in Hardin County, Iowa. Known for its friendly community and rural appeal, Union offers a peaceful lifestyle away from the hustle and bustle of larger urban centers. The city exemplifies small-town living with its tight-knit community and accessible amenities.

Location & geography

Union is situated in central Iowa and covers an area of 53.97 square miles of land. It is bordered by several small towns and cities, such as Eldora, which lies approximately 7 miles to the northeast, and Steamboat Rock, about 4 miles to the northwest. The terrain is primarily flat, with a small water area of 0.18 square miles that contributes to its scenic rural environment.

Community & economy

The character of Union reflects a strong sense of community, where residents often engage in local events and activities. Agriculture is a primary industry in the area, contributing significantly to daily life and the local economy. Residents enjoy a laid-back lifestyle, with opportunities for outdoor activities and community gatherings.

Transportation

Union is conveniently accessed via several highways, including U.S. Route 65, which runs north-south and connects to larger cities in the region. The nearest major airport is the Des Moines International Airport, located approximately 60 miles to the southwest, providing residents with access to both domestic and international flights. Public transit options are limited, typical for rural communities, but residents primarily rely on personal vehicles.

History

Union was founded in the late 19th century and has since maintained its agricultural roots as a cornerstone of its economy. The city's development was influenced by the surrounding farmland, and it has faced challenges and changes typical of small Midwestern towns over the years. Notable events in its history include local festivals and community meetings that foster a sense of belonging among its residents.

Did you know?

One surprising fact about Union is its dedication to preserving local history, which can be explored through various community events. Additionally, the city showcases a unique blend of recreational and cultural activities that are characteristic of small-town Iowa life.

ZIP codes for Union, IA (1)
ZIP code City County Map
50258 Union Hardin View map

Demographics & statistics

831
Population
51.7
Median age
$78,869
Median household income
$35,181
Per capita income
$106,300
Median home value
$639
Median monthly rent
89.6%
Home ownership
13.2%
Poverty rate
1.9%
Unemployment
354
Housing units
27.1%
Bachelor's or higher

Age distribution

Male Female
26
Under 5
33
14
5–9
19
11
10–14
15
20
15–19
27
12
20–24
15
23
25–34
30
25
35–44
33
54
45–54
71
28
55–59
37
50
60–64
65
68
65–74
89
14
75–84
19
14
85+
19
← Male
Female →

Age summary

GroupCount%
Under 1815118.2%
18 and over68081.8%
65 and over22326.8%
Median age51.7 years

Race & ethnicity

White 98.9%
Two or more races 1%
Asian 0.1%
GroupCount%
White82298.9%
Two or more races81%
Asian10.1%

Household income

Under $10k 3.3%
$10k–$15k 3.0%
$15k–$25k 6.3%
$25k–$35k 8.7%
$35k–$50k 11.0%
$50k–$75k 14.3%
$75k–$100k 22.4%
$100k–$150k 15.8%
$150k–$200k 12.2%
$200k+ 3.0%
Range% of households
Under $10k3.3%
$10k–$15k3.0%
$15k–$25k6.3%
$25k–$35k8.7%
$35k–$50k11.0%
$50k–$75k14.3%
$75k–$100k22.4%
$100k–$150k15.8%
$150k–$200k12.2%
$200k+3.0%
Median income$78,869

Housing

Home values

Under $50k 17.0%
$50k–$100k 31.7%
$100k–$150k 10.7%
$150k–$200k 5.7%
$200k–$300k 14.7%
$300k–$500k 7.3%
$500k–$1M 0.7%
$1M+ 12.3%

Housing overview

MetricValue
Median home value$106,300
Median rent / month$639
Owner occupied89.6%
Renter occupied10.4%
Vacant13.9%
Single-family detached93.6%
Large apartment buildings0.0%
Mobile homes2.3%
Median rooms6.4
Avg household size (owned)2.34

Year built

Era%
2020 or later0.0%
2010–20191.8%
2000–20095.1%
1990–19996.7%
1980–198912.6%
1970–197915.9%
1960–19699.8%
1950–19596.2%
1940–19499.0%
1939 or earlier32.9%

Bedrooms

Size% of units
No bedroom (studio)2.1%
1 bedroom4.4%
2 bedrooms29.0%
3 bedrooms38.3%
4 bedrooms15.7%
5+ bedrooms10.5%

Vehicles per household

Vehicles% of households
No vehicle1.5%
1 vehicle23.0%
2 vehicles37.3%
3 or more38.2%

Heating fuel

Fuel type%
Utility gas50.7%
Electricity14.0%
Propane / LP gas24.8%
Fuel oil6.3%
Wood4.2%

Households & families

Household typeCount%
Married-couple family20059.7%
Cohabiting couple206.0%
Male householder, no spouse5115.2%
Female householder, no spouse6419.1%
Households with children under 186318.8%
Households with seniors (65+)13239.4%
Average household size2.48

Marital status

StatusMaleFemale
Never married27.2%15.0%
Married60.2%66.0%
Separated0.6%0.0%
Widowed6.6%6.6%
Divorced5.4%12.4%

Education

Less than 9th grade 0.3%
Some HS, no diploma 1.3%
HS graduate 31.1%
Some college, no degree 28.6%
Associate's degree 11.6%
Bachelor's degree 24.4%
Graduate / professional 2.7%
Metric%
HS diploma or higher98.4%
Bachelor's or higher27.1%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool44.3%
Kindergarten44.3%
Elementary school3638.7%
High school4144.1%
College / grad school88.6%

Employment

Industry of employment

Education & healthcare 26.6%
Finance & real estate 17.5%
Retail trade 15.1%
Manufacturing 11.8%
Agriculture & mining 9.2%
Construction 8.1%
Other services 3.3%
Professional & management 3.1%
Transportation & utilities 2.6%
Information 1.1%
Wholesale trade 0.9%
Public administration 0.7%
Arts, food & hospitality 0.2%

Occupation

Category%
Management, business & arts24.0%
Service17.5%
Sales & office28.8%
Natural resources & construction14.0%
Production & transportation15.7%

Employment type

Type%
Private sector80.8%
Government4.4%
Self-employed14.8%
Unpaid family workers0.0%

Commute

Method%
Drive alone77.3%
Carpool2.5%
Public transit0.0%
Walk7.2%
Other means0.0%
Avg commute (minutes)15.9

Poverty

All people 13.2%
Under 18 years 35.8%
18 and over 8.2%
Married-couple families 1.5%
Female-led households 56.0%

Income support

Source% of households
Social Security32.2%
Retirement income27.8%
Supplemental Security7.2%
Cash public assistance9.3%
Food stamps / SNAP8.4%

Health indicators

Condition%
High blood pressure36.7%
High cholesterol37.1%
Heart disease7.9%
Stroke3.4%
Asthma9.0%
Arthritis27.9%
Kidney disease3.2%
Pulmonary disease7.5%
Cancer8.3%
Behavior / access%
Binge drinking19.6%
No physical activity25.2%
Less than 7 hrs sleep29.9%
Fair or poor health13.2%
Poor mental health12.4%
Poor physical health10.2%
No health insurance8.6%
Visited doctor (checkup)75.9%
Visited dentist67.5%
Cholesterol screening90.6%
Teeth loss12.3%

Veterans & disability

VeteransCount%
Civilian veterans659.6%
Disability%
Any disability8.9%
Under 181.3%
18–64 years3.3%
65 and over25.6%

Health insurance coverage

Type%
Private insurance59.3%
Public insurance45.7%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only77292.9%
Spanish00.0%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)81297.7%
Born in same state81297.7%
Born in different state69884.0%
Foreign born00.0%
Naturalized citizen192.3%
Not a US citizen1894.7%

Ancestry

AncestryCount%
French14817.8%
Italian12314.8%
Arab829.9%
Polish617.3%
AncestryCount%
Dutch131.6%
English20.2%
German10.1%

Technology access

Metric% of households
Computer access40.3%
Internet access74.9%

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

Frequently asked questions
What ZIP codes does Union, IA have?
Union, IA has one ZIP code: 50258. Each ZIP code serves a distinct delivery area within the city and surrounding region.
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