ZIP 51446 vs ZIP 51447
Source:
Irwin, IA — Kirkman, IA
This side-by-side compares ZIP 51446 (Irwin, IA) and ZIP 51447 (Kirkman, IA) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 51446 has a population of 511 at 6 people per square mile, while ZIP 51447 has 228 at 3 per square mile. That difference in population size and density alone reshapes how every other metric should be interpreted — a higher-income ZIP with 1,200 residents behaves very differently from one with 45,000.
On income and education, ZIP 51446 reports a median household income of $62,750 against $68,214 in ZIP 51447, with per-capita income of $54,812 vs $38,842. The share of adults holding a bachelor's degree or higher is 30.0% in 51446 and 17.3% in 51447. Poverty rate reads 10.9% vs 29.2%, and unemployment 0.4% vs 12.8% — these four fields alone drive most of the difference in the scorecard grades you will see for each ZIP.
Housing separates these two ZIPs further: median home value sits at $91,400 in 51446 versus $141,700 in 51447, with median rent of $705 and $1,167 per month respectively. Homeownership rate is 87.4% vs 61.5%. When reading the comparison table below, focus on paired metrics rather than single winners — a ZIP with lower home values and lower income is not strictly "worse" if rent-to-income ratios and commute times land in the same zone. Every value is pulled from the exact same ACS table so the two columns are genuinely comparable.
Compare different ZIP codes:
| Metric | 51446 Irwin, IA | 51447 Kirkman, IA |
|---|---|---|
| Population | 511 | 228 |
| Median Household Income | $62,750 | $68,214 |
| Per Capita Income | $54,812 | $38,842 |
| Median Age | 50.3 | 61.5 |
| Bachelor's Degree or Higher | 30.0% | 17.3% |
| Poverty Rate | 10.9% | 29.2% |
| Unemployment Rate | 0.4% | 12.8% |
| Median Home Value | $91,400 | $141,700 |
| Median Rent (monthly) | $705 | $1,167 |
| Homeownership Rate | 87.4% | 61.5% |
| Population Density (per sq mi) | 6 | 3 |
Values highlighted in green indicate the better metric where applicable. Source: U.S. Census Bureau ACS 2023.
What are common questions about this comparison?
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All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.