Irwin, IA

Single-footprint Census roll-up for Irwin, IA: 1 USPS ZIP, population 511. Open the primary ZIP for household income, housing tenure, and commute from ACS 2023 5-Year Estimates.

U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage

ACS city ledger plate

Sheet IRWIN-IA · Irwin, IA 1 ZIPs · 511 pop · #16510/25278 · Shelby County

INC-MID · RANK-LOWER · BELOW-PEER · BOOK-ONE · OWN-HIGH · POP-VILLAGE · SPREAD-UNK · HOME-LOW

  • INC-MID $62,750
  • RANK-LOWER #16510/25278
  • BELOW-PEER under Defiance
  • BOOK-ONE 1 ZIP
  • OWN-HIGH 87% owners
  • POP-VILLAGE 511
  • SPREAD-UNK Single-ZIP book
  • HOME-LOW $91,400

Nearest income peer: Defiance, IA (+ $2,000 income $)

Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.

Income neighbourhood around Irwin

Lowest/highest poles plus county-sharing cities nearest Irwin on average ZIP median household income. Full ladder: /cities.

median HH income

What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-25

National city placement

According to ACS 5-Year Estimates, Irwin, IA sits among US cities with a below-median household income, on a village-scale population base, across a single-ZIP footprint.

35th pct
household income vs 25,278 US cities
511
city population (Census)
1
USPS ZIP codes covered
$62,750
avg ZIP median income

Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.

Below-median income with few delivery areas (1): read cost-of-living from the primary ZIP. Household income $62,750 and poverty 10.9% concentrate in 51446.

Owner-occupancy here runs high (87.4%) - tenure is stable enough that the ZIP detail's owner share is the right next click, not a renter-heavy compare.

Within Iowa, Oakville is the closest lower-income city and Sioux City the closest higher-income city by average ZIP household income. Their 1 and 7 ZIP footprints are the immediate statewide comparison set for Irwin.

Population concentration

Irwin reads through its lone ZIP, 51446

511 ACS residents, one ZIP: 51446 is not the leading code inside Irwin, it is the only one on file. Treat the ZIP page as the primary source for anything below the city-wide total.

Census ZBP business roll-up

Dense ZBP book packed into Irwin's one ZIP

Citywide ZBP: 18 establishments, 101 employees , annual payroll $4,681k (~35 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 51446 (18 units) ; leading NAICS Wholesale trade (5) · also Transportation and warehousing .

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ZIP Codes in Irwin, IA

These ZIP codes sit in Shelby County, which covers 9 ZIP codes in all; 1 of them fall in Irwin. See the Shelby County roll-up →

Irwin sits in the lower half of Shelby County on income: Harlan, Earling and Defiance report more, and only Elk Horn reports less. Portsmouth marks the far end of that range at $103,257, 65% above Irwin.

ZIP Code Population Median income Establishments Density
51446 511 $62,750 18 6

Irwin roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving Irwin, .