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 classified by USPS as a standard delivery area and covers roughly 132.2 square miles in Blencoe, Monona County, Iowa. The area is home to 357 residents, producing a population density of 3 people per square mile, and falls within the Chicago time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 51523 against Iowa and the nation.
On the economic side, the median household income for ZIP 51523 sits at $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%. On housing, the median home value is $136,800 (22% below the state average) with median rent at $857 per month, and 79.3% of occupied units are owner-occupied, a direct signal of whether 51523 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 18.9% of adults hold a bachelor's degree or higher, the median age is 50.2, and the average commute is —. We also surface 3 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Monona County, so you can benchmark 51523 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, 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; HUD FMR + FHFA HPI updated quarterly/annually.
Quick Facts
357
Population
132.2
Area (sq mi)
3
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 51523?
50.2
Median Age
50.1%
Male
49.9%
Female
0.0%
Foreign-Born
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
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
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?
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
$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.
- 51040
Onawa (51040)
3,712 residents
- 68061
Tekamah (68061)
2,504 residents
- 51545 378
Little Sioux (51545)
378 residents
- 51523 357
Blencoe (51523)
357 residents
What this shows Among its immediate neighbors, ZIP 51523 ranks #4 by population — useful context the national average alone can't give.
ZIP 51523 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51523
Blencoe (51523)
$82,625 median income
- 51040
Onawa (51040)
$71,179 median income
- 51545
Little Sioux (51545)
$70,313 median income
- 68061
Tekamah (68061)
$64,556 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.
More ZIP Codes in Monona County
Related Areas
Frequently Asked Questions
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ZIP Code Research Guides
Official Data Resources for Blencoe, IA
Verify and explore additional data for this area using these official government sources.
Read our methodology to see how this data is sourced, computed, and verified.