Irwin, IA 51446 ZIP Code Profile

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Irwin, IA

ZIP Code 51446: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Irwin, IA 51446

  • ZIP Code Type: STANDARD
  • County: Shelby County
  • Centroid: Latitude 41.791, Longitude -95.21
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes
  • Businesses Addresses: 17
  • PO Box Addresses: 128
  • Residential Addresses: 113
    • Multi-Family Addresses: 0
    • Single Family Addresses: 113

The ZIP Code maps and database are updated 4 times per year.
Database updated: August 1, 2018, Maps updated: August 1, 2018.

EXTREMELY LOCAL Demographic Data

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51446 ZIP Code Map

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Irwin, IA 51446 Data & Demographics (As of July 1, 2018)


Total Population 507
Population in Households 507
Population in Familes 419
Population in Group Qrtrs 0
Population Density2 13
Diversity Index3 7


Median Household Income $45,524
Average Household Income $55,910
Per Capita Income $26,687


Total Housing Units 272 (100%)
Owner Occupied HU 196 (72.1%)
Renter Occupied HU 46 (16.9%)
Vacant Housing Units 30 (11.0%)
Median Home Value $99,107
Average Home Value $132,398


Total Households 242
Average Household Size 2.1
Family Households 166
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population -0.17% -0.32%
Households 0.0% -0.17%
Families -0.15% -0.24%
Median Household Income   2.06%
Per Capita Income   2.6%

Irwin, IA 51446 - Peer Comparisons by Rank and Percentile

The table below compares 51446 to the other 961 ZIP Codes in Iowa by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 688 29th
Population Density # 743 23rd
Diversity Index # 718 25th
Median Household Income # 864 10th
Per Capita Income # 729 24th

Additional comparisons and rankings can be made with a VERY EASY TO USE Iowa Census Data Comparison Tool.

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