Irwin, IA · standard
ZIP Code 51446
Shelby County, Iowa - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 511
- 6/sq mi Low-density area
- $62,750
- Median income Near-median income area
- $91,400
- Median home value Below-median home value
- 30.0%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Irwin pairs a below-median household income with among the most affordable home values nationally, in a rural, homeowner-dominated area.
- 34th pct
- household income, US ZIPs
- 7th pct
- home value, US ZIPs
- 6
- people per sq mi
- 87%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 51446 against every reporting US ZIP.
ZIP code 51446 is a sparsely populated ZIP (a standard USPS delivery area) in Irwin, Shelby County, Iowa, home to just 511 residents across 89.6 square miles, a density of 6 people per square mile, in the Chicago time zone.
ZIP 51446 reports a modest median household income of $62,750 (18% below the average Iowa ZIP), while per-capita income is $54,812. The poverty rate is 10.9%, with unemployment at 0.4%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $91,400 (48% below the average Iowa ZIP), and median rent is $705; owner occupancy is 87.4%.
A solid share of residents have a four-year degree: 30.0% of adults hold a bachelor's degree or higher, the median age is 50.3, and the average commute is 25 minutes. The page also surfaces 5 ZIP codes within roughly 10 miles and 6 more in Shelby County, so 51446 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 51446, Irwin, 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
511
Population
89.6
Area (sq mi)
6
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 51446?
50.3
Median Age
55.7%
Male
44.3%
Female
1.4%
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?
$62,750
Median Household Income
-18% vs state ZIP avg
$54,812
Per Capita Income
10.9%
Poverty Rate
0.4%
Unemployment Rate
25.0 min
Mean Commute Time
How ZIP 51446 ranks among Iowa ZIPs
Irwin, 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)
$62,750 24th percentile higher than 24% 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
244housing units
244
Total Housing Units
231
Occupied Units
13
Vacant Units
2.16
Avg Household Size
Occupancy Type
$91,400
Median Home Value
-48% vs state ZIP avg
$705
Median Rent
1945
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 18 business establishments in ZIP 51446, employing approximately 101 people with a combined annual payroll of $4,681,000.
18
Businesses
101
Employees
$4.7M
Annual Payroll
2
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Wholesale trade | 5 | 27.8% |
| Transportation and warehousing | 3 | 16.7% |
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 51446 vs 51447 →
ZIP 51446 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51537
Harlan (51537)
6,703 residents
- 51455 2,306
Manning (51455)
2,306 residents
- 51454 1,346
Manilla (51454)
1,346 residents
- 51446 511
Irwin (51446)
511 residents
- 51543 445
Kimballton (51543)
445 residents
- 51447 228
Kirkman (51447)
228 residents
What this shows Among its immediate neighbors, ZIP 51446 ranks #4 by population - useful context the national average alone can't give.
ZIP 51446 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51454
Manilla (51454)
$100,625 median income
- 51455
Manning (51455)
$76,786 median income
- 51543
Kimballton (51543)
$72,083 median income
- 51447
Kirkman (51447)
$68,214 median income
- 51537
Harlan (51537)
$65,000 median income
- 51446
Irwin (51446)
$62,750 median income
What this shows By household income, ZIP 51446 ranks #6 of 6 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 51446, 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 Shelby County
Related Areas
Frequently Asked Questions
What county is ZIP code 51446 in?
ZIP code 51446 (Irwin) is located in Shelby County, Iowa. Shelby County contains multiple ZIP codes, see the full list at /counties/shelby-ia.
What is the population of ZIP code 51446?
ZIP code 51446 in Irwin, IA has a population of 511 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 51446?
The median household income in ZIP 51446 is $62,750, which is 18% below the national average of $76,288.
What is the average home value in ZIP 51446?
The median home value in ZIP 51446 is $91,400, which is 67% below the national average of $278,155.
What is the demographic makeup of ZIP 51446?
The largest racial group in ZIP 51446 is White at 94.0%. Hispanic or Latino residents make up 4.0% of the population.
How many businesses are in ZIP code 51446?
ZIP code 51446 has 18 business establishments employing approximately 101 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 51446?
In ZIP code 51446, 62.1% of residents aged 25+ have a high school diploma or higher, and 30.0% 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 51446?
The mean commute time for workers in ZIP code 51446 is 25.0 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 51446?
In ZIP code 51446, approximately 87.4% of occupied housing units are owner-occupied and 12.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 51446?
The poverty rate in ZIP code 51446 is 10.9% 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 51446's numbers, next.
- See how ZIP 51446 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Irwin, 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.