Castana, IA · standard
ZIP Code 51010
Monona County, Iowa - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 456
- 3/sq mi Low-density area
- $89,063
- Median income Above-median income area
- $114,800
- Median home value Below-median home value
- 11.0%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
Castana pairs an above-median household income with among the most affordable home values nationally, in a rural, homeowner-dominated area.
- Top 28%
- household income, US ZIPs
- 15th pct
- home value, US ZIPs
- 3
- people per sq mi
- 88%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 51010 against every reporting US ZIP.
ZIP code 51010 is a sparsely populated ZIP (a standard USPS delivery area) in Castana, Monona County, Iowa, home to just 456 residents across 175.4 square miles, a density of 3 people per square mile, in the Chicago time zone.
ZIP 51010 lands in the middle-income range, with a median household income of $89,063 (16% above the average Iowa ZIP), while per-capita income is $40,064. Both reported hardship measures are comparatively low in absolute terms: poverty is 2.4% and unemployment is 1.1%. Home values sit below the statewide ZIP benchmark: the median is $114,800 (35% below the average Iowa ZIP), and median rent is $99; owner occupancy is 87.5%.
Formal educational attainment runs low here: just 11.0% of adults hold a bachelor's degree or higher, the median age is 46.7, and the average commute is 35 minutes. The page also surfaces 4 ZIP codes within roughly 10 miles and 6 more in Monona County, so 51010 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 51010, Castana, 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
456
Population
175.4
Area (sq mi)
3
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 51010?
46.7
Median Age
51.8%
Male
48.2%
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?
$89,063
Median Household Income
+16% vs state ZIP avg
$40,064
Per Capita Income
2.4%
Poverty Rate
1.1%
Unemployment Rate
35.0 min
Mean Commute Time
How ZIP 51010 ranks among Iowa ZIPs
Castana, 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)
$89,063 Top 22% higher than 78% 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
262housing units
262
Total Housing Units
208
Occupied Units
54
Vacant Units
2.04
Avg Household Size
Occupancy Type
$114,800
Median Home Value
-35% vs state ZIP avg
$99
Median Rent
1958
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 4 business establishments in ZIP 51010, employing approximately 3 people with a combined annual payroll of $51,000.
4
Businesses
3
Employees
$51K
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 51010 vs 51051 →
ZIP 51010 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51034
Mapleton (51034)
1,820 residents
- 51056 478
Smithland (51056)
478 residents
- 51010 456
Castana (51010)
456 residents
- 51572 398
Soldier (51572)
398 residents
- 51051 90
Rodney (51051)
90 residents
What this shows Among its immediate neighbors, ZIP 51010 ranks #3 by population - useful context the national average alone can't give.
ZIP 51010 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51056
Smithland (51056)
$103,313 median income
- 51010
Castana (51010)
$89,063 median income
- 51572
Soldier (51572)
$69,500 median income
- 51034
Mapleton (51034)
$66,375 median income
- 51051
Rodney (51051)
$51,563 median income
What this shows By household income, ZIP 51010 ranks #2 of 5 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 51010, 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 51010 in?
ZIP code 51010 (Castana) 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 51010?
ZIP code 51010 in Castana, IA has a population of 456 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 51010?
The median household income in ZIP 51010 is $89,063, which is 17% above the national average of $76,288.
What is the average home value in ZIP 51010?
The median home value in ZIP 51010 is $114,800, which is 59% below the national average of $278,155.
What is the demographic makeup of ZIP 51010?
The largest racial group in ZIP 51010 is White at 94.4%. Hispanic or Latino residents make up 4.0% of the population.
How many businesses are in ZIP code 51010?
ZIP code 51010 has 4 business establishments employing approximately 3 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 51010?
In ZIP code 51010, 52.2% of residents aged 25+ have a high school diploma or higher, and 11.0% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 51010?
The mean commute time for workers in ZIP code 51010 is 35.0 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 51010?
In ZIP code 51010, approximately 87.5% of occupied housing units are owner-occupied and 12.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 51010?
The poverty rate in ZIP code 51010 is 2.4% 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 51010's numbers, next.
- See how ZIP 51010 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Castana, 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.