51577 ZIP Code — Walnut, IA

Pottawattamie County, Iowa

ZIP code 51577 is located in Walnut, Iowa, within Pottawattamie County. It covers approximately 83.56 square miles and serves a population of 1,326 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 712.

About ZIP code 51577

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 $121,100. Owner-occupancy sits near the national average at 75%.

Median household income is $62,500. 44% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with retail trade as the leading industry. The average commute of 21 minutes is near the national average.

College attainment at 20% is below the national average, consistent with a trades and production-oriented local economy.

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

Overall, ZIP code 51577 reflects a community defined by a strong veteran community and a significant Social Security-dependent population.

1,326

population

83.56

sq mi land

Standard

ZIP type

Central (CT)

timezone

51577 ZIP code map

Cities in ZIP code 51577

Below are the cities the US Postal Service accepts for ZIP code 51577. Using any city not on this list may result in mail delivery delays.

City	Status
Walnut	Preferred

Nearby ZIP codes

51552 Marne (5.6 mi) 51521 Avoca (8.8 mi) 51536 Hancock (10 mi) 51531 Elk Horn (10.5 mi) 50022 Atlantic (11.7 mi) 51544 Lewis (11.9 mi) 51537 Harlan (12.6 mi) 51560 Oakland (13.1 mi) 51570 Shelby (14.8 mi) 51543 Kimballton (15.6 mi) 51535 Griswold (15.8 mi) 50042 Brayton (16.4 mi)

Demographics updated 05/2026

Population
Total population	1,326
Population density	16 / sq mi
State FIPS	19
County FIPS	155

Geography
Land area	83.56 sq mi
Water area	0.02 sq mi
Latitude	41.4550
Longitude	-95.2125
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	49.8%	41.8%	40.1%
$50k – $100k	32.5%	33.7%	33.4%
$100k – $200k	16.8%	20.6%	21.5%
Over $200k	0.9%	3.9%	5.0%

Demographics & statistics

1,326

Population

People per sq mi

59.9

Median age

$62,500

Median household income

$32,947

Per capita income

$121,100

Median home value

$790

Median monthly rent

74.5%

Home ownership

7.7%

Poverty rate

4.6%

Unemployment

453

Housing units

20.1%

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

141

65–74

147

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	193	14.6%
18 and over	1,133	85.4%
65 and over	546	41.2%
Median age	59.9 years

Race & ethnicity

White 95.1%

Two or more races 2.2%

Black or African American 1.8%

Hispanic or Latino 0.8%

Other race 0.1%

Group	Count	%
White	1,271	95.1%
Two or more races	29	2.2%
Black or African American	24	1.8%
Hispanic or Latino	11	0.8%
Other race	2	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	49.8%	41.8%	40.1%
$50k – $100k	32.5%	33.7%	33.4%
$100k – $200k	16.8%	20.6%	21.5%
Over $200k	0.9%	3.9%	5.0%

Under $10k 3.2%

$10k–$15k 5.1%

$15k–$25k 9.5%

$25k–$35k 7.1%

$35k–$50k 14.6%

$50k–$75k 22.7%

$75k–$100k 13.0%

$100k–$150k 14.4%

$150k–$200k 4.5%

$200k+ 5.7%

Range	% of households
Under $10k	3.2%
$10k–$15k	5.1%
$15k–$25k	9.5%
$25k–$35k	7.1%
$35k–$50k	14.6%
$50k–$75k	22.7%
$75k–$100k	13.0%
$100k–$150k	14.4%
$150k–$200k	4.5%
$200k+	5.7%
Median income	$62,500

Housing

Home values

Under $50k 8.0%

$50k–$100k 26.8%

$100k–$150k 33.4%

$150k–$200k 14.3%

$200k–$300k 8.5%

$300k–$500k 5.8%

$1M+ 3.2%

Housing overview

Metric	Value
Median home value	$121,100
Median rent / month	$790
Owner occupied	74.5%
Renter occupied	25.5%
Vacant	13.1%
Single-family detached	84.2%
Large apartment buildings	8.9%
Mobile homes	2.7%
Median rooms	6.4
Avg household size (owned)	2.08

Year built

Era	%
2020 or later	0.0%
2010–2019	2.1%
2000–2009	0.7%
1990–1999	1.2%
1980–1989	3.6%
1970–1979	6.2%
1960–1969	18.2%
1950–1959	9.1%
1940–1949	3.3%
1939 or earlier	55.7%

Bedrooms

Size	% of units
No bedroom (studio)	2.1%
1 bedroom	11.9%
2 bedrooms	19.1%
3 bedrooms	40.0%
4 bedrooms	22.7%
5+ bedrooms	4.3%

Vehicles per household

Vehicles	% of households
No vehicle	6.7%
1 vehicle	30.2%
2 vehicles	26.5%
3 or more	36.6%

Heating fuel

Fuel type	%
Utility gas	52.2%
Electricity	24.5%
Propane / LP gas	23.3%

Households & families

Household type	Count	%
Married-couple family	210	41.5%
Cohabiting couple	8	1.6%
Male householder, no spouse	134	26.5%
Female householder, no spouse	154	30.4%
Households with children under 18	98	19.4%
Households with seniors (65+)	227	44.9%
Average household size	2.01

Marital status

Status	Male	Female
Never married	35.0%	10.1%
Married	39.7%	41.6%
Separated	0.0%	1.7%
Widowed	3.5%	29.0%
Divorced	21.8%	17.6%

Education

Less than 9th grade 2.0%

Some HS, no diploma 4.8%

HS graduate 35.9%

Some college, no degree 17.8%

Associate's degree 19.4%

Bachelor's degree 16.4%

Graduate / professional 3.8%

Metric	%
HS diploma or higher	93.2%
Bachelor's or higher	20.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	15	9.7%
Kindergarten	5	3.2%
Elementary school	58	37.4%
High school	66	42.6%
College / grad school	11	7.1%

Employment

Industry of employment

Retail trade 20.1%

Education & healthcare 18.8%

Transportation & utilities 12.3%

Finance & real estate 10.5%

Agriculture & mining 7.7%

Manufacturing 6.7%

Professional & management 6.1%

Construction 4.6%

Public administration 3.8%

Wholesale trade 3.4%

Other services 3.4%

Arts, food & hospitality 1.3%

Information 1.1%

Occupation

Category	%
Management, business & arts	34.7%
Service	11.7%
Sales & office	21.5%
Natural resources & construction	10.2%
Production & transportation	22.0%

Employment type

Type	%
Private sector	78.7%
Government	9.0%
Self-employed	12.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	84.8%
Carpool	4.6%
Public transit	0.0%
Walk	0.0%
Work from home	10.2%
Other means	0.4%
Avg commute (minutes)	21.0

Poverty

All people 7.7%

Under 18 years 7.7%

18 and over 7.7%

Married-couple families 1.0%

Female-led households 11.9%

Income support

Source	% of households
Social Security	43.7%
Retirement income	27.7%
Supplemental Security	3.8%
Cash public assistance	4.0%
Food stamps / SNAP	6.3%

Health indicators

Condition	%
Obesity	39.3%
High blood pressure	37.9%
High cholesterol	36.0%
Diabetes	11.5%
Heart disease	8.1%
Stroke	3.6%
Asthma	9.5%
Arthritis	30.6%
Kidney disease	3.3%
Pulmonary disease	7.9%
Cancer	8.4%

Behavior / access	%
Smoking	18.5%
Binge drinking	19.1%
No physical activity	27.1%
Less than 7 hrs sleep	30.9%
Depression	19.6%
Fair or poor health	14.0%
Poor mental health	13.0%
Poor physical health	10.5%
No health insurance	8.6%
Visited doctor (checkup)	76.8%
Visited dentist	65.2%
Cholesterol screening	90.1%
Teeth loss	13.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	147	13.0%

Disability	%
Any disability	16.3%
Under 18	2.1%
18–64 years	10.0%
65 and over	37.5%

Health insurance coverage

Type	%
Private insurance	70.1%
Public insurance	43.2%
No insurance	5.7%
Uninsured under 19	7.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,276	96.2%
Spanish	9	0.7%
Other Indo-European	9	0.7%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,315	99.2%
Born in same state	1,315	99.2%
Born in different state	1,043	78.7%
Foreign born	0	0.0%
Naturalized citizen	11	0.8%
Not a US citizen	2	18.2%

Ancestry

Ancestry	Count	%
Dutch	139	10.5%
Italian	134	10.1%
French	53	4%
Arab	35	2.6%
Polish	27	2%

Ancestry	Count	%
English	17	1.3%
German	6	0.5%
Norwegian	6	0.5%
Irish	2	0.2%

Technology access

Metric	% of households
Computer access	38.2%
Internet access	85.8%

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

Frequently asked questions about ZIP code 51577

What city is ZIP code 51577 in?

ZIP code 51577 is primarily assigned to Walnut, Iowa.

What county is ZIP code 51577 in?

ZIP code 51577 falls within Pottawattamie County, Iowa.

Does ZIP code 51577 have an older population?

41% of residents in ZIP code 51577 are 65 or older, above the national average of ~17%.

Does ZIP code 51577 have a large retiree population?

44% of households in ZIP code 51577 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 51577 have a large veteran population?

13% of civilians in ZIP code 51577 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 51577?

The median home value in ZIP code 51577 is $121,100.

What timezone is ZIP code 51577 in?

ZIP code 51577 observes the CST timezone.