Barnum, IA has a population of 284 and is the 22,762nd largest city in the United States. The population density is 774 per sq mi which is 1316% higher than the Iowa average and 754% higher than the national average. The median age in Barnum is 25 which is approximately 33% lower than the Iowa average of 38. In Barnum, 62% of the population over 15 years of age are married, 94% speak English and 6% speak Spanish. 84% of Barnum residents were born in Iowa, 12% were born out of state, 4% were born outside of the United States and 0% were foreign born.
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The population density in Barnum is 1316% higher than Iowa.
The median age in Barnum is 33% lower than Iowa.
In Barnum 100.00% of the population is White.
In Barnum 0.00% of the population is Black or African American.