51557 ZIP Code — Mondamin, IA

Harrison County, Iowa

ZIP code 51557 is located in Mondamin, Iowa, within Harrison County. It covers approximately 75.28 square miles and serves a population of 834 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 712.

About ZIP code 51557

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $145,600. Owner-occupancy is high at 89%, well above the national average.

Median household income is $75,417. The poverty rate of 7% is below the national average.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. An above-average commute of 36 minutes suggests many residents work outside the immediate area.

Educational attainment is near the national average, with 25% of residents holding a bachelor's degree or higher.

Notable community characteristics include a notable veteran presence at 13% of civilians, above the national average of 7%.

Overall, ZIP code 51557 reflects a community defined by a strong veteran community and high homeownership.

834

population

75.28

sq mi land

Standard

ZIP type

Central (CT)

timezone

51557 ZIP code map

Cities in ZIP code 51557

Below are the cities the US Postal Service accepts for ZIP code 51557. Using any city not on this list may result in mail delivery delays.

City	Status
Mondamin	Preferred

Nearby ZIP codes

51564 Pisgah (6.4 mi) 51556 Modale (6.5 mi) 68061 Tekamah (11.1 mi) 51523 Blencoe (12.7 mi) 51555 Missouri Valley (13 mi) 51546 Logan (14.4 mi) 51558 Moorhead (15 mi) 51579 Woodbine (15.8 mi) 68008 Blair (16.5 mi) 68029 Herman (16.8 mi) 51040 Onawa (18.4 mi) 68023 Fort Calhoun (18.7 mi)

Demographics updated 05/2026

Population
Total population	834
Population density	11 / sq mi
State FIPS	19
County FIPS	085

Geography
Land area	75.28 sq mi
Water area	0.73 sq mi
Latitude	41.7400
Longitude	-96.0071
Timezone	Central (CT)
Area code	712

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	30.2%	37.9%	40.1%
$50k – $100k	41.1%	35.3%	33.4%
$100k – $200k	25.7%	23.0%	21.5%
Over $200k	3.0%	3.8%	5.0%

Demographics & statistics

834

Population

People per sq mi

45.0

Median age

$75,417

Median household income

$41,654

Per capita income

$145,600

Median home value

$888

Median monthly rent

88.8%

Home ownership

7.1%

Poverty rate

5.5%

Unemployment

402

Housing units

25.0%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	194	23.3%
18 and over	640	76.7%
65 and over	129	15.5%
Median age	45.0 years

Race & ethnicity

White 98%

Two or more races 1.1%

Hispanic or Latino 0.7%

Other race 0.2%

Group	Count	%
White	823	98%
Two or more races	9	1.1%
Hispanic or Latino	6	0.7%
Other race	2	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	30.2%	37.9%	40.1%
$50k – $100k	41.1%	35.3%	33.4%
$100k – $200k	25.7%	23.0%	21.5%
Over $200k	3.0%	3.8%	5.0%

Under $10k 4.4%

$10k–$15k 2.2%

$15k–$25k 12.0%

$25k–$35k 1.6%

$35k–$50k 8.4%

$50k–$75k 21.3%

$75k–$100k 19.9%

$100k–$150k 11.7%

$150k–$200k 5.7%

$200k+ 12.8%

Range	% of households
Under $10k	4.4%
$10k–$15k	2.2%
$15k–$25k	12.0%
$25k–$35k	1.6%
$35k–$50k	8.4%
$50k–$75k	21.3%
$75k–$100k	19.9%
$100k–$150k	11.7%
$150k–$200k	5.7%
$200k+	12.8%
Median income	$75,417

Housing

Home values

Under $50k 12.9%

$50k–$100k 15.0%

$100k–$150k 24.8%

$150k–$200k 19.9%

$200k–$300k 11.3%

$300k–$500k 12.6%

$500k–$1M 2.1%

$1M+ 1.2%

Housing overview

Metric	Value
Median home value	$145,600
Median rent / month	$888
Owner occupied	88.8%
Renter occupied	11.2%
Vacant	17.2%
Single-family detached	85.6%
Large apartment buildings	0.0%
Mobile homes	12.4%
Median rooms	6.0
Avg household size (owned)	2.27

Year built

Era	%
2020 or later	0.0%
2010–2019	2.9%
2000–2009	10.6%
1990–1999	4.7%
1980–1989	4.1%
1970–1979	19.4%
1960–1969	2.9%
1950–1959	6.5%
1940–1949	1.4%
1939 or earlier	47.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	11.1%
2 bedrooms	29.1%
3 bedrooms	34.1%
4 bedrooms	21.0%
5+ bedrooms	4.7%

Vehicles per household

Vehicles	% of households
No vehicle	0.5%
1 vehicle	16.9%
2 vehicles	51.8%
3 or more	30.8%

Heating fuel

Fuel type	%
Utility gas	4.4%
Electricity	37.6%
Propane / LP gas	53.1%
Fuel oil	0.3%
Wood	2.5%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	209	56.9%
Cohabiting couple	19	5.2%
Male householder, no spouse	87	23.7%
Female householder, no spouse	52	14.2%
Households with children under 18	117	31.9%
Households with seniors (65+)	104	28.3%
Average household size	2.27

Marital status

Status	Male	Female
Never married	20.7%	24.8%
Married	55.4%	62.2%
Separated	0.0%	1.9%
Widowed	4.8%	7.7%
Divorced	19.1%	3.4%

Education

Less than 9th grade 1.7%

Some HS, no diploma 2.7%

HS graduate 33.9%

Some college, no degree 25.4%

Associate's degree 11.2%

Bachelor's degree 21.5%

Graduate / professional 3.6%

Metric	%
HS diploma or higher	95.6%
Bachelor's or higher	25.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	14	7.9%
Kindergarten	20	11.3%
Elementary school	64	36.2%
High school	61	34.5%
College / grad school	18	10.2%

Employment

Industry of employment

Education & healthcare 32.0%

Construction 11.0%

Manufacturing 10.6%

Professional & management 8.8%

Transportation & utilities 6.1%

Agriculture & mining 5.9%

Arts, food & hospitality 5.6%

Finance & real estate 5.2%

Retail trade 5.0%

Wholesale trade 4.1%

Public administration 4.1%

Other services 1.4%

Information 0.5%

Occupation

Category	%
Management, business & arts	40.1%
Service	17.6%
Sales & office	15.8%
Natural resources & construction	12.2%
Production & transportation	14.4%

Employment type

Type	%
Private sector	69.4%
Government	24.8%
Self-employed	5.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	82.2%
Carpool	6.0%
Public transit	0.0%
Walk	1.6%
Work from home	9.9%
Other means	0.2%
Avg commute (minutes)	35.5

Poverty

All people 7.1%

Under 18 years 10.3%

18 and over 6.1%

Married-couple families 1.0%

Female-led households 29.4%

Income support

Source	% of households
Social Security	29.2%
Retirement income	15.5%
Supplemental Security	5.2%
Cash public assistance	2.5%
Food stamps / SNAP	4.9%

Health indicators

Condition	%
Obesity	40.9%
High blood pressure	36.4%
High cholesterol	36.5%
Diabetes	11.1%
Heart disease	7.4%
Stroke	3.4%
Asthma	9.2%
Arthritis	27.6%
Kidney disease	3.1%
Pulmonary disease	7.5%
Cancer	7.8%

Behavior / access	%
Smoking	18.3%
Binge drinking	20.7%
No physical activity	25.8%
Less than 7 hrs sleep	31.6%
Depression	18.0%
Fair or poor health	13.6%
Poor mental health	13.0%
Poor physical health	10.2%
No health insurance	9.3%
Visited doctor (checkup)	75.0%
Visited dentist	67.8%
Cholesterol screening	89.9%
Teeth loss	13.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	86	13.4%

Disability	%
Any disability	8.9%
Under 18	1.0%
18–64 years	8.2%
65 and over	23.3%

Health insurance coverage

Type	%
Private insurance	78.8%
Public insurance	32.0%
No insurance	1.6%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	785	94.1%
Spanish	1	0.1%
Other Indo-European	1	0.1%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	830	99.5%
Born in same state	830	99.5%
Born in different state	326	39.1%
Foreign born	0	0.0%
Naturalized citizen	4	0.5%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
French	134	16.1%
Dutch	70	8.4%
Italian	54	6.5%
Arab	35	4.2%

Ancestry	Count	%
Polish	24	2.9%
English	23	2.8%
German	1	0.1%

Technology access

Metric	% of households
Computer access	44.0%
Internet access	91.6%

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

Frequently asked questions about ZIP code 51557

What city is ZIP code 51557 in?

ZIP code 51557 is primarily assigned to Mondamin, Iowa.

What county is ZIP code 51557 in?

ZIP code 51557 falls within Harrison County, Iowa.

Is ZIP code 51557 mostly owner-occupied?

89% of occupied units in ZIP code 51557 are owner-occupied, well above the national average.

Does ZIP code 51557 have a large veteran population?

13% of civilians in ZIP code 51557 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 51557?

The median home value in ZIP code 51557 is $145,600.

What is the population of ZIP code 51557?

ZIP code 51557 has an estimated population of 834 residents, with a density of 11 people per square mile.

What timezone is ZIP code 51557 in?

ZIP code 51557 observes the CST timezone.