PlainZIP

Blencoe, IA · standard

ZIP Code 51523

Monona County, Iowa - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

357
3/sq mi
$82,625
Median income
$136,800
Median home value
18.9%
Bachelor's or higher

The verdict

Blencoe pairs an above-median household income with among the most affordable home values nationally, in a rural, homeowner-dominated area.

Top 35%
household income, US ZIPs
22th pct
home value, US ZIPs
3
people per sq mi
79%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 51523 against every reporting US ZIP.

ZIP code 51523 is a sparsely populated ZIP (a standard USPS delivery area) in Blencoe, Monona County, Iowa, home to just 357 residents across 132.2 square miles, a density of 3 people per square mile, in the Chicago time zone.

ZIP 51523 lands in the middle-income range, with a median household income of $82,625 (8% above the Iowa average), while per-capita income is $40,604. The poverty rate stands at 8.2% and the unemployment rate at 3.9%. Median home value sits at $136,800 (22% below the state average), median rent at $857 a month, and owner-occupancy at 79.3%.

Educational attainment sits below the national norm: 18.9% of adults hold a bachelor's degree or higher, the median age is 50.2, and the average commute is -. Beyond these figures, 3 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Monona County, letting you compare 51523 to its immediate surroundings rather than a national baseline alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 51523, Blencoe, IA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

357

Population

132.2

Area (sq mi)

3

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 51523?

50.2

Median Age

50.1%

Male

49.9%

Female

0.0%

Foreign-Born

White 97.6%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 2.4%
Hispanic or Latino 2.6%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$82,625

Median Household Income

+8% vs state

$40,604

Per Capita Income

8.2%

Poverty Rate

3.9%

Unemployment Rate

How ZIP 51523 ranks nationally

Blencoe, IA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$82,625 Top 35% higher than 65% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). This entry sits in this band. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 70.1%
Bachelor's Degree or Higher 18.9%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

178

Total Housing Units

169

Occupied Units

9

Vacant Units

2.24

Avg Household Size

Occupancy Type

Owner 79.3%
Renter 20.7%

$136,800

Median Home Value

-22% vs state

$857

Median Rent

1948

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 3 business establishments in ZIP 51523, employing approximately 33 people with a combined annual payroll of $2,098,000.

3

Businesses

33

Employees

$2.1M

Annual Payroll

0

Industry Sectors

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 51523 vs 51545 →

ZIP 51523 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 51523 ranks #4 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 51523 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 51523 ranks the highest of 4 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
51545 Little Sioux, IA 378 5.5 mi
51040 Onawa, IA 3,712 8.5 mi
68061 Tekamah, NE 2,504 10.8 mi

More ZIP Codes in Monona County

51040 standard
Onawa, IA
Pop: 3,712
51034 standard
Mapleton, IA
Pop: 1,820
51063 standard
Whiting, IA
Pop: 1,100
51060 standard
Ute, IA
Pop: 615
51558 standard
Moorhead, IA
Pop: 560
51010 standard
Castana, IA
Pop: 456

Related Areas

Monona County Blencoe, IA Iowa

Frequently Asked Questions

What county is ZIP code 51523 in? ▼
ZIP code 51523 (Blencoe) is located in Monona County, Iowa. Monona County contains multiple ZIP codes, see the full list at /counties/monona-ia.
What is the population of ZIP code 51523? ▼
ZIP code 51523 in Blencoe, IA has a population of 357 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 51523? ▼
The median household income in ZIP 51523 is $82,625, which is 8% above the national average of $76,288.
What is the average home value in ZIP 51523? ▼
The median home value in ZIP 51523 is $136,800, which is 51% below the national average of $278,155.
What is the demographic makeup of ZIP 51523? ▼
The largest racial group in ZIP 51523 is White at 97.6%. Hispanic or Latino residents make up 2.6% of the population.
How many businesses are in ZIP code 51523? ▼
ZIP code 51523 has 3 business establishments employing approximately 33 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 51523? ▼
In ZIP code 51523, 70.1% of residents aged 25+ have a high school diploma or higher, and 18.9% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 51523? ▼
In ZIP code 51523, approximately 79.3% of occupied housing units are owner-occupied and 20.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 51523? ▼
The poverty rate in ZIP code 51523 is 8.2% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.