51523 ZIP Code — Blencoe, IA

Monona County, Iowa

ZIP code 51523 is located in Blencoe, Iowa, within Monona County. It covers approximately 50.18 square miles and serves a population of 370 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 712.

About ZIP code 51523

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 $99,500. Owner-occupancy is high at 84%, well above the national average.

Median household income is $79,286. The poverty rate of 2% is below the national average. 47% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 22 minutes is near the national average.

Educational attainment is near the national average, with 23% of residents holding a bachelor's degree or higher.

Notable community characteristics include a notable veteran presence at 14% of civilians, above the national average of 7%.

Overall, ZIP code 51523 reflects a community defined by a strong veteran community, high homeownership, and a significant Social Security-dependent population.

370

population

50.18

sq mi land

Standard

ZIP type

Central (CT)

timezone

51523 ZIP code map

Cities in ZIP code 51523

Below are the cities the US Postal Service accepts for ZIP code 51523. Using any city not on this list may result in mail delivery delays.

City	Status
Blencoe	Preferred

Nearby ZIP codes

51040 Onawa (5.7 mi) 68020 Decatur (10.1 mi) 68061 Tekamah (10.2 mi) 51558 Moorhead (12.2 mi) 51564 Pisgah (12.3 mi) 51557 Mondamin (12.7 mi) 51010 Castana (14.9 mi) 51572 Soldier (15.9 mi) 51063 Whiting (16.7 mi) 68019 Craig (17.3 mi) 51556 Modale (18.8 mi) 68039 Macy (19.2 mi)

Demographics updated 05/2026

Population
Total population	370
Population density	7 / sq mi
State FIPS	19
County FIPS	133

Geography
Land area	50.18 sq mi
Water area	0.66 sq mi
Latitude	41.9144
Longitude	-96.0818
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	33.7%	47.2%	40.1%
$50k – $100k	28.4%	33.9%	33.4%
$100k – $200k	33.1%	16.1%	21.5%
Over $200k	4.7%	2.8%	5.0%

Demographics & statistics

370

Population

People per sq mi

42.5

Median age

$79,286

Median household income

$33,648

Per capita income

$99,500

Median home value

Median monthly rent

83.8%

Home ownership

2.2%

Poverty rate

6.7%

Unemployment

139

Housing units

23.0%

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	106	28.6%
18 and over	264	71.4%
65 and over	90	24.3%
Median age	42.5 years

Race & ethnicity

White 98.1%

Two or more races 1.3%

Hispanic or Latino 0.5%

Group	Count	%
White	365	98.1%
Two or more races	5	1.3%
Hispanic or Latino	2	0.5%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	33.7%	47.2%	40.1%
$50k – $100k	28.4%	33.9%	33.4%
$100k – $200k	33.1%	16.1%	21.5%
Over $200k	4.7%	2.8%	5.0%

Under $10k 2.1%

$10k–$15k 0.7%

$15k–$25k 9.2%

$25k–$35k 1.4%

$35k–$50k 14.1%

$50k–$75k 13.4%

$75k–$100k 26.8%

$100k–$150k 24.6%

$150k–$200k 4.9%

$200k+ 2.8%

Range	% of households
Under $10k	2.1%
$10k–$15k	0.7%
$15k–$25k	9.2%
$25k–$35k	1.4%
$35k–$50k	14.1%
$50k–$75k	13.4%
$75k–$100k	26.8%
$100k–$150k	24.6%
$150k–$200k	4.9%
$200k+	2.8%
Median income	$79,286

Housing

Home values

Under $50k 14.3%

$50k–$100k 36.1%

$100k–$150k 10.9%

$150k–$200k 8.4%

$200k–$300k 16.8%

$300k–$500k 13.4%

Housing overview

Metric	Value
Median home value	$99,500
Median rent / month	$0
Owner occupied	83.8%
Renter occupied	16.2%
Vacant	12.3%
Single-family detached	90.1%
Large apartment buildings	0.0%
Mobile homes	9.9%
Median rooms	6.7
Avg household size (owned)	2.51

Year built

Era	%
2020 or later	0.0%
2010–2019	1.9%
2000–2009	0.0%
1990–1999	2.5%
1980–1989	3.7%
1970–1979	9.3%
1960–1969	11.7%
1950–1959	15.4%
1940–1949	2.5%
1939 or earlier	53.1%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	9.3%
2 bedrooms	27.8%
3 bedrooms	31.5%
4 bedrooms	21.6%
5+ bedrooms	9.9%

Vehicles per household

Vehicles	% of households
No vehicle	2.8%
1 vehicle	15.5%
2 vehicles	31.7%
3 or more	50.0%

Heating fuel

Fuel type	%
Utility gas	2.1%
Electricity	15.5%
Propane / LP gas	68.3%
Fuel oil	12.0%
Wood	1.4%

Households & families

Household type	Count	%
Married-couple family	95	66.9%
Cohabiting couple	12	8.5%
Male householder, no spouse	15	10.6%
Female householder, no spouse	20	14.1%
Households with children under 18	47	33.1%
Households with seniors (65+)	57	40.1%
Average household size	2.61

Marital status

Status	Male	Female
Never married	25.2%	19.9%
Married	64.7%	68.2%
Separated	0.0%	0.0%
Widowed	0.0%	7.3%
Divorced	10.1%	4.6%

Education

Less than 9th grade 2.8%

Some HS, no diploma 3.2%

HS graduate 34.1%

Some college, no degree 16.7%

Associate's degree 20.2%

Bachelor's degree 15.9%

Graduate / professional 7.1%

Metric	%
HS diploma or higher	94.0%
Bachelor's or higher	23.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	12	14.6%
Kindergarten	5	6.1%
Elementary school	32	39.0%
High school	28	34.1%
College / grad school	5	6.1%

Employment

Industry of employment

Education & healthcare 41.8%

Agriculture & mining 20.9%

Construction 7.2%

Retail trade 7.2%

Wholesale trade 5.9%

Manufacturing 3.9%

Transportation & utilities 3.9%

Professional & management 2.6%

Public administration 2.6%

Arts, food & hospitality 2.0%

Other services 2.0%

Occupation

Category	%
Management, business & arts	49.7%
Service	15.0%
Sales & office	15.7%
Natural resources & construction	10.5%
Production & transportation	9.2%

Employment type

Type	%
Private sector	73.2%
Government	7.8%
Self-employed	18.3%
Unpaid family workers	0.7%

Commute

Method	%
Drive alone	88.9%
Carpool	5.2%
Public transit	0.0%
Walk	0.0%
Work from home	5.9%
Other means	0.0%
Avg commute (minutes)	22.3

Poverty

All people 2.2%

Under 18 years 0.0%

18 and over 3.0%

Married-couple families 1.1%

Female-led households 0.0%

Income support

Source	% of households
Social Security	46.5%
Retirement income	34.5%
Supplemental Security	3.5%
Cash public assistance	2.1%
Food stamps / SNAP	7.7%

Health indicators

Condition	%
Obesity	33.8%
High blood pressure	37.5%
High cholesterol	39.1%
Diabetes	11.2%
Heart disease	7.7%
Stroke	3.4%
Asthma	8.9%
Arthritis	28.3%
Kidney disease	3.2%
Pulmonary disease	7.5%
Cancer	8.9%

Behavior / access	%
Smoking	16.2%
Binge drinking	20.1%
No physical activity	23.8%
Less than 7 hrs sleep	29.2%
Depression	16.9%
Fair or poor health	12.8%
Poor mental health	12.3%
Poor physical health	9.9%
No health insurance	8.6%
Visited doctor (checkup)	76.7%
Visited dentist	68.1%
Cholesterol screening	90.7%
Teeth loss	12.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	38	14.4%

Disability	%
Any disability	13.2%
Under 18	5.7%
18–64 years	11.5%
65 and over	25.6%

Health insurance coverage

Type	%
Private insurance	69.5%
Public insurance	45.1%
No insurance	4.6%
Uninsured under 19	2.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	331	89.5%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	370	100.0%
Born in same state	370	100.0%
Born in different state	241	65.1%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	75	20.3%
French	42	11.4%
Arab	15	4.1%
Polish	12	3.2%

Ancestry	Count	%
English	11	3%
German	4	1.1%
Dutch	3	0.8%

Technology access

Metric	% of households
Computer access	38.4%
Internet access	96.5%

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

Frequently asked questions about ZIP code 51523

What city is ZIP code 51523 in?

ZIP code 51523 is primarily assigned to Blencoe, Iowa.

What county is ZIP code 51523 in?

ZIP code 51523 falls within Monona County, Iowa.

Does ZIP code 51523 have a large retiree population?

47% of households in ZIP code 51523 receive Social Security income, suggesting a significant retiree or disability population.

Is ZIP code 51523 mostly owner-occupied?

84% of occupied units in ZIP code 51523 are owner-occupied, well above the national average.

Does ZIP code 51523 have a large veteran population?

14% of civilians in ZIP code 51523 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 51523?

The median home value in ZIP code 51523 is $99,500.

What timezone is ZIP code 51523 in?

ZIP code 51523 observes the CST timezone.