Marne, IA has a population of 120 and is the 26,428th largest city in the United States. The population density is 209 per sq mi which is 282% higher than the Iowa average and 130% higher than the national average. The median age in Marne is 48 which is approximately 25% higher than the Iowa average of 38. In Marne, 68% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 66% of Marne residents were born in Iowa, 33% were born out of state, 0% were born outside of the United States and 2% were foreign born.
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The population density in Marne is 282% higher than Iowa.
The median age in Marne is 25% higher than Iowa.
In Marne 96.67% of the population is White.
In Marne 0.00% of the population is Black or African American.