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 Low-density area
- $82,625
- Median income Near-median income area
- $136,800
- Median home value Below-median home value
- 18.9%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
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
- 22nd 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 average Iowa ZIP), while per-capita income is $40,604. The poverty rate is 8.2%, with unemployment at 3.9%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $136,800 (22% below the average Iowa ZIP), and median rent is $857; owner occupancy is 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 -. The page also surfaces 3 ZIP codes within roughly 10 miles and 6 more in Monona County, so 51523 can be compared with both its immediate and county-level context.
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
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 ZIP avg
$40,604
Per Capita Income
8.2%
Poverty Rate
3.9%
Unemployment Rate
How ZIP 51523 ranks among Iowa ZIPs
Blencoe, IA household income vs. every Iowa ZIP code
Median household income among 911 reporting Iowa ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$82,625 Top 32% higher than 68% of 911 Iowa ZIPs
Each bar is a $20K-wide band; taller bars hold more Iowa 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?
Housing stock: occupied vs vacant
178housing units
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 ZIP avg
$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.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 51523, both outside IA so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Monona County
Related Areas
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.
Related
Take this with you
What to do with ZIP 51523's numbers, next.
- See how ZIP 51523 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Blencoe, IA ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.