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The 2009 Irwin, IA, population is 361. There are 614 people per square mile (population density).
The median age is 46. The US median is 37.6. 63.70% of people in Irwin, IA, are married. 4.08% are divorced.
The average household size is 2.23 people. 18.46% of people are married, with children. 6.26% have children, but are single.
98.98% of people are white, 0.28% are black, 0.00% are asian, 0.28% are native american, and 0.28% claim 'Other'.
2.83% of the people in Irwin, IA, claim hispanic ethnicity (meaning 97.17% are non-hispanic).
Irwin, IA People data
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