Irwin is a city located in Shelby County, Iowa. Irwin has a 2025 population of 318. Irwin is currently declining at a rate of -0.31% annually and its population has decreased by -1.24% since the most recent census, which recorded a population of 322 in 2020.
The average household income in Irwin is $67,184 with a poverty rate of 12.93%. The median age in Irwin is 46.6 years: 29 years for males, and 53.2 years for females.
Data after 2023 is projected based on recent change
The racial composition of Irwin includes 92.93% White, and smaller percentages for other race, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
White
Two or more races
Other race
Black or African American
Native American
Asian
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 276 | 92.93% |
| Two or more races | 16 | 5.39% |
| Other race | 5 | 1.68% |
| Black or African American | 0 | 0% |
| Native American | 0 | 0% |
| Asian | 0 | 0% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
Married
Widowed
Divorced
Separated
Never Married
Irwin's average per capita income is $48,438. Household income levels show a median of $47,917. The poverty rate stands at 12.93%.
Name | Median | Mean |
|---|---|---|
| Married Families | $115,938 | - |
| Families | $106,250 | $91,671 |
| Households | $47,917 | $67,184 |
| Non Families | $31,181 | $38,662 |
Average Income
Median Household Income
Poverty Rate