Irwin Flag

Irwin

County:
Shelby County
County Seat:
No
Area (mi²):
0.586
State:
Iowa

Irwin is a city located in Shelby County, Iowa. Irwin has a 2026 population of 320. Irwin is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 320 in 2020.

The median household income in Irwin is $40,417 with a poverty rate of 15.52%. The median age in Irwin is 48.5 years: 45.1 years for males, and 50.3 years for females. For every 100 females there are 124.2 males.

320
Total Population
546
Density (mi²)

Irwin Population

Irwin Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202632000%
202532000%
202432010.31%
202331920.63%
2022317-1-0.31%
2021318-2-0.62%
2020320-1-0.31%
2019312-4-1.27%
2018316-1-0.32%
2017317-4-1.25%
2016321-4-1.23%
2015325-3-0.91%
2014328-2-0.61%
2013330-3-0.9%
2012333-1-0.3%
2011334-7-2.05%
201034100%

Median Age

Overall: 48.5 years
Female: 50.3 years
Male: 45.1 years

Irwin Adults

There are 288 adults, (101 of whom are seniors) in Irwin.

Sex Ratio

Female: 157 (44.6%)
Male: 195 (55.4%)

Demographics

The racial composition of Irwin includes 91.48% White, and smaller percentages for other race and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White32291.48%
Two or more races267.39%
Other race41.14%
Race
Population ↓
Percentage (of total)
Two or more races164.55%
Other race41.14%
Race
Population ↓
Percentage (of total)
White32291.48%
Two or more races102.84%

Irwin Marital Status

Economics and Income Statistics

Irwin 's average per capita income is $51,071. Household income levels show a median of $40,417. The poverty rate stands at 15.52%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$104,107-
Families$76,250$92,037
Households$40,417$62,325
Non Families$31,319$34,419

$51,071

Average Income

$40,417

Median Household Income

15.52%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)