Marengo ZIP Code List — Iowa County, IA

There is one unique ZIP code in Marengo, Iowa and it is 52301. Area code: 319.

ZIP codes

126.29

sq mi land

0.21

sq mi water

319

area code

Marengo, IA ZIP code map

About Marengo, IA

Marengo, Iowa, is a charming city located in the heart of Iowa County. Known for its friendly community and small-town atmosphere, Marengo offers residents a peaceful lifestyle while being close to urban conveniences. Its historical significance and vibrant local culture make it a delightful place to visit or call home.

Location & geography

Situated in central Iowa, Marengo is approximately 30 miles west of Cedar Rapids and about 150 miles east of Des Moines, making it an accessible destination. The city spans a land area of 126.29 square miles, complemented by a small water area of 0.21 square miles. The terrain is primarily flat, typical of Iowa's landscape, providing picturesque rural views.

Community & economy

The character of Marengo is defined by its close-knit community, which hosts various local events and festivals throughout the year. The economy is supported by agriculture and small businesses, with residents often engaged in farming and retail industries. Daily life in Marengo revolves around community gatherings, local schools, and recreational activities that promote camaraderie among residents.

Transportation

Marengo is accessible via Interstate 80, which runs just south of the city, facilitating easy travel to nearby metropolitan areas. The nearest named airports include the Eastern Iowa Airport in Cedar Rapids and the Des Moines International Airport to the southwest. Public transit options are limited, so personal vehicles are the primary mode of transportation for residents.

History

Marengo was established in the mid-1800s when the area was settled by pioneers attracted to its fertile land and promising opportunities. The city was named after the Battle of Marengo, which was a significant victory for Napoleon Bonaparte. Over the years, Marengo has maintained its agricultural roots, with farming being a key industry that continues to support the local economy.

Did you know?

One surprising fact about Marengo is that it is home to the Iowa County Historical Society, which preserves and shares the rich history of the region. Additionally, the city boasts a unique local feature, the Marengo Historical Museum, which showcases artifacts and exhibits reflecting its past.

ZIP codes for Marengo, IA (1)

ZIP code	City	County	Map
52301	Marengo	Iowa	View map

Demographics & statistics

4,099

Population

42.7

Median age

$66,553

Median household income

$34,147

Per capita income

$139,400

Median home value

$722

Median monthly rent

78.1%

Home ownership

8.7%

Poverty rate

3.2%

Unemployment

1,507

Housing units

13.2%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

109

173

10–14

190

117

15–19

128

20–24

222

25–34

243

262

35–44

288

170

45–54

187

165

55–59

182

157

60–64

173

264

65–74

291

123

75–84

136

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	896	21.9%
18 and over	3,203	78.1%
65 and over	874	21.3%
Median age	42.7 years

Race & ethnicity

White 93.6%

Hispanic or Latino 2.2%

Two or more races 1.8%

Other race 1.2%

Black or African American 0.8%

American Indian / Alaska Native 0.1%

Asian 0.1%

Group	Count	%
White	3,926	93.6%
Hispanic or Latino	94	2.2%
Two or more races	75	1.8%
Other race	52	1.2%
Black or African American	35	0.8%
American Indian / Alaska Native	6	0.1%
Asian	5	0.1%

Household income

Under $10k 3.4%

$10k–$15k 3.1%

$15k–$25k 6.0%

$25k–$35k 9.2%

$35k–$50k 11.4%

$50k–$75k 25.3%

$75k–$100k 13.6%

$100k–$150k 19.7%

$150k–$200k 4.8%

$200k+ 3.4%

Range	% of households
Under $10k	3.4%
$10k–$15k	3.1%
$15k–$25k	6.0%
$25k–$35k	9.2%
$35k–$50k	11.4%
$50k–$75k	25.3%
$75k–$100k	13.6%
$100k–$150k	19.7%
$150k–$200k	4.8%
$200k+	3.4%
Median income	$66,553

Housing

Home values

Under $50k 6.3%

$50k–$100k 20.0%

$100k–$150k 27.5%

$150k–$200k 15.3%

$200k–$300k 18.0%

$300k–$500k 10.5%

$500k–$1M 1.8%

$1M+ 0.6%

Housing overview

Metric	Value
Median home value	$139,400
Median rent / month	$722
Owner occupied	78.1%
Renter occupied	21.9%
Vacant	9.8%
Single-family detached	82.0%
Large apartment buildings	0.7%
Mobile homes	5.6%
Median rooms	6.6
Avg household size (owned)	2.39

Year built

Era	%
2020 or later	0.0%
2010–2019	4.8%
2000–2009	6.1%
1990–1999	11.6%
1980–1989	6.8%
1970–1979	16.9%
1960–1969	3.4%
1950–1959	5.3%
1940–1949	5.4%
1939 or earlier	39.6%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	8.8%
2 bedrooms	19.0%
3 bedrooms	50.8%
4 bedrooms	18.8%
5+ bedrooms	2.6%

Vehicles per household

Vehicles	% of households
No vehicle	5.2%
1 vehicle	21.2%
2 vehicles	45.0%
3 or more	28.6%

Heating fuel

Fuel type	%
Utility gas	58.1%
Electricity	16.3%
Propane / LP gas	20.1%
Fuel oil	0.8%
Wood	1.8%

Households & families

Household type	Count	%
Married-couple family	834	49.3%
Cohabiting couple	130	7.7%
Male householder, no spouse	286	16.9%
Female householder, no spouse	443	26.2%
Households with children under 18	436	25.8%
Households with seniors (65+)	601	35.5%
Average household size	2.37

Marital status

Status	Male	Female
Never married	28.2%	18.2%
Married	53.6%	54.5%
Separated	1.3%	0.2%
Widowed	2.1%	9.0%
Divorced	14.8%	18.0%

Education

Less than 9th grade 4.7%

Some HS, no diploma 5.7%

HS graduate 39.5%

Some college, no degree 23.8%

Associate's degree 13.1%

Bachelor's degree 9.7%

Graduate / professional 3.5%

Metric	%
HS diploma or higher	89.7%
Bachelor's or higher	13.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	42	4.6%
Kindergarten	38	4.2%
Elementary school	454	49.8%
High school	279	30.6%
College / grad school	98	10.8%

Employment

Industry of employment

Education & healthcare 24.7%

Manufacturing 18.8%

Retail trade 14.1%

Construction 9.1%

Arts, food & hospitality 6.5%

Agriculture & mining 5.6%

Professional & management 4.2%

Public administration 4.0%

Other services 3.8%

Transportation & utilities 3.2%

Wholesale trade 2.9%

Finance & real estate 1.7%

Information 1.4%

Occupation

Category	%
Management, business & arts	31.8%
Service	17.0%
Sales & office	22.6%
Natural resources & construction	11.5%
Production & transportation	17.1%

Employment type

Type	%
Private sector	76.8%
Government	17.2%
Self-employed	6.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	86.8%
Carpool	7.5%
Public transit	0.0%
Walk	1.3%
Other means	0.5%
Avg commute (minutes)	21.8

Poverty

All people 8.7%

Under 18 years 10.8%

18 and over 8.1%

Married-couple families 1.4%

Female-led households 18.8%

Income support

Source	% of households
Social Security	36.3%
Retirement income	30.8%
Supplemental Security	3.9%
Cash public assistance	2.2%
Food stamps / SNAP	9.7%

Health indicators

Condition	%
High blood pressure	33.6%
High cholesterol	32.8%
Heart disease	6.8%
Stroke	3.1%
Asthma	9.3%
Arthritis	25.3%
Kidney disease	2.9%
Pulmonary disease	6.9%
Cancer	7.5%

Behavior / access	%
Binge drinking	21.3%
No physical activity	24.7%
Less than 7 hrs sleep	31.0%
Fair or poor health	12.7%
Poor mental health	13.4%
Poor physical health	9.8%
No health insurance	9.6%
Visited doctor (checkup)	74.8%
Visited dentist	67.9%
Cholesterol screening	89.2%
Teeth loss	12.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	266	8.3%

Disability	%
Any disability	14.8%
Under 18	9.3%
18–64 years	12.3%
65 and over	27.7%

Health insurance coverage

Type	%
Private insurance	72.8%
Public insurance	37.6%
Uninsured under 19	2.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,916	95.5%
Spanish	52	1.3%
Other Indo-European	47	1.2%
Asian & Pacific Islander	0	0.0%
Other languages	5	0.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,999	97.6%
Born in same state	3,978	97.0%
Born in different state	3,420	83.4%
Foreign born	21	0.5%
Naturalized citizen	100	2.4%
Not a US citizen	26	26.0%

Ancestry

Ancestry	Count	%
Italian	597	14.6%
French	256	6.2%
Arab	244	6%
English	187	4.6%

Ancestry	Count	%
Polish	92	2.2%
Dutch	13	0.3%
Norwegian	6	0.1%

Technology access

Metric	% of households
Computer access	41.3%
Internet access	92.1%

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

Frequently asked questions

What is the ZIP code for Marengo, IA?

Marengo, IA has one ZIP code: 52301.

What is the main ZIP code for Marengo, IA?

The primary ZIP code for Marengo, IA is 52301. The city uses area code 319 for phone service.

What county is Marengo, IA in?

Marengo is located in Iowa County, Iowa.

How many ZIP codes are in Marengo, IA?

Marengo, IA has 1 ZIP code.

What is the ZIP code for downtown Marengo and the surrounding historic district?

Downtown Marengo and its historic district are located in ZIP code 52301, which covers the central business area of this Iowa County city.

What ZIP code should I use when mailing items to businesses and residences in Marengo, Iowa?

All addresses in Marengo, Iowa use the ZIP code 52301, as it is the only ZIP code serving this city.