Irwin, IA Profile: Facts & Data


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Irwin, Iowa - Basic Facts

The City of Irwin had a population of 334 as of July 1, 2018. Irwin ranks in the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Iowa. See peer rankings below.

The primary coordinate point for Irwin is located at latitude 41.7902 and longitude -95.2068 in Shelby County. The formal boundaries for the City of Irwin (see map below) encompass a land area of 0.6 sq. miles and a water area of 0 sq. miles. Shelby County is in the Central time zone (GMT -6). The elevation is 1,280 feet.

The City of Irwin (GNIS ID: 2395441) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Irwin is located within Township of Jefferson, a minor civil division (MCD) of Shelby County.

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  1. Irwin 2018 Demographic Data
  2. Growth Rates for Irwin (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Iowa Research Tools (Easy Tools & Current Data)
  3. Iowa Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


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


Total Population 334
Population in Households 334
Population in Familes 275
Population in Group Qrtrs 0
Population Density2 560
Diversity Index3 6


Median Household Income $42,331
Average Household Income $54,977
Per Capita Income $24,624


Total Housing Units 185 (100%)
Owner Occupied HU 131 (70.8%)
Renter Occupied HU 33 (17.8%)
Vacant Housing Units 21 (11.4%)
Median Home Value $97,436
Average Home Value $133,523


Total Households 164
Average Household Size 2.04
Family Households 111
Average Family Size 2
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population -0.25% -0.36%
Households -0.07% -0.25%
Families 1.65% -0.18%
Median Household Income   2.49%
Per Capita Income   2.59%

Irwin, IA - Peer Comparisons by Rank and Percentile

The table below compares Irwin to the other 1,009 incorporated cities, towns and CDPs 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 # 571 44th
Population Density # 593 41st
Diversity Index # 776 24th
Median Household Income # 942 7th
Per Capita Income # 862 15th

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

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